diff --git a/actions/apiaccountupdatedeliverydevice.php b/actions/apiaccountupdatedeliverydevice.php
index 684906fe90..05d19c22de 100644
--- a/actions/apiaccountupdatedeliverydevice.php
+++ b/actions/apiaccountupdatedeliverydevice.php
@@ -103,7 +103,7 @@ class ApiAccountUpdateDeliveryDeviceAction extends ApiAuthAction
             $this->clientError(
                 _(
                     'You must specify a parameter named ' .
-                    '\'device\' with a value of one of: sms, im, none'
+                    '\'device\' with a value of one of: sms, im, none.'
                 )
             );
             return;
diff --git a/actions/apigroupcreate.php b/actions/apigroupcreate.php
index 145806356c..3eb3ae5fcc 100644
--- a/actions/apigroupcreate.php
+++ b/actions/apigroupcreate.php
@@ -263,7 +263,7 @@ class ApiGroupCreateAction extends ApiAuthAction
 
             if (!$valid) {
                 $this->clientError(
-                    sprintf(_('Invalid alias: "%s"'), $alias),
+                    sprintf(_('Invalid alias: "%s".'), $alias),
                     403,
                     $this->format
                 );
diff --git a/actions/apigroupismember.php b/actions/apigroupismember.php
index 97f8435614..f51c747dfb 100644
--- a/actions/apigroupismember.php
+++ b/actions/apigroupismember.php
@@ -92,7 +92,7 @@ class ApiGroupIsMemberAction extends ApiBareAuthAction
         }
 
         if (empty($this->group)) {
-            $this->clientError(_('Group not found!'), 404, $this->format);
+            $this->clientError(_('Group not found.'), 404, $this->format);
             return false;
         }
 
diff --git a/actions/apigroupjoin.php b/actions/apigroupjoin.php
index 374cf83df0..28df72fa9a 100644
--- a/actions/apigroupjoin.php
+++ b/actions/apigroupjoin.php
@@ -101,7 +101,7 @@ class ApiGroupJoinAction extends ApiAuthAction
         }
 
         if (empty($this->group)) {
-            $this->clientError(_('Group not found!'), 404, $this->format);
+            $this->clientError(_('Group not found.'), 404, $this->format);
             return false;
         }
 
diff --git a/actions/apigroupleave.php b/actions/apigroupleave.php
index 9848ece053..f6e52b26e8 100644
--- a/actions/apigroupleave.php
+++ b/actions/apigroupleave.php
@@ -101,7 +101,7 @@ class ApiGroupLeaveAction extends ApiAuthAction
         }
 
         if (empty($this->group)) {
-            $this->clientError(_('Group not found!'), 404, $this->format);
+            $this->clientError(_('Group not found.'), 404, $this->format);
             return false;
         }
 
diff --git a/actions/apigroupmembership.php b/actions/apigroupmembership.php
index 9f72b527cf..c97b27fac4 100644
--- a/actions/apigroupmembership.php
+++ b/actions/apigroupmembership.php
@@ -88,7 +88,7 @@ class ApiGroupMembershipAction extends ApiPrivateAuthAction
         parent::handle($args);
 
         if (empty($this->group)) {
-            $this->clientError(_('Group not found!'), 404, $this->format);
+            $this->clientError(_('Group not found.'), 404, $this->format);
             return false;
         }
 
diff --git a/actions/apigroupshow.php b/actions/apigroupshow.php
index 5745a81f41..8e471689a8 100644
--- a/actions/apigroupshow.php
+++ b/actions/apigroupshow.php
@@ -79,7 +79,7 @@ class ApiGroupShowAction extends ApiPrivateAuthAction
                 common_redirect(common_local_url('ApiGroupShow', $args), 301);
             } else {
                 $this->clientError(
-                    _('Group not found!'),
+                    _('Group not found.'),
                     404,
                     $this->format
                 );
diff --git a/actions/apistatusesupdate.php b/actions/apistatusesupdate.php
index 1956c85863..d4ef6b550d 100644
--- a/actions/apistatusesupdate.php
+++ b/actions/apistatusesupdate.php
@@ -199,7 +199,7 @@ class ApiStatusesUpdateAction extends ApiAuthAction
                     $reply_to = $this->in_reply_to_status_id;
                 } else {
                     $this->clientError(
-                        _('Not found'),
+                        _('Not found.'),
                         $code = 404,
                         $this->format
                     );
diff --git a/actions/apitimelinegroup.php b/actions/apitimelinegroup.php
index da816c40a9..56d1de094c 100644
--- a/actions/apitimelinegroup.php
+++ b/actions/apitimelinegroup.php
@@ -88,7 +88,7 @@ class ApiTimelineGroupAction extends ApiPrivateAuthAction
         parent::handle($args);
 
         if (empty($this->group)) {
-            $this->clientError(_('Group not found!'), 404, $this->format);
+            $this->clientError(_('Group not found.'), 404, $this->format);
             return false;
         }
 
diff --git a/actions/block.php b/actions/block.php
index fe4ec00881..7f609c253b 100644
--- a/actions/block.php
+++ b/actions/block.php
@@ -66,7 +66,7 @@ class BlockAction extends ProfileFormAction
         assert(!empty($cur)); // checked by parent
 
         if ($cur->hasBlocked($this->profile)) {
-            $this->clientError(_("You already blocked that user."));
+            $this->clientError(_('You already blocked that user.'));
             return false;
         }
 
diff --git a/actions/deleteuser.php b/actions/deleteuser.php
index 4e6b273953..42ef4b9f51 100644
--- a/actions/deleteuser.php
+++ b/actions/deleteuser.php
@@ -64,14 +64,14 @@ class DeleteuserAction extends ProfileFormAction
         assert(!empty($cur)); // checked by parent
 
         if (!$cur->hasRight(Right::DELETEUSER)) {
-            $this->clientError(_("You cannot delete users."));
+            $this->clientError(_('You cannot delete users.'));
             return false;
         }
 
         $this->user = User::staticGet('id', $this->profile->id);
 
         if (empty($this->user)) {
-            $this->clientError(_("You can only delete local users."));
+            $this->clientError(_('You can only delete local users.'));
             return false;
         }
 
diff --git a/actions/designadminpanel.php b/actions/designadminpanel.php
index 30e8bde1a4..41d917e3ca 100644
--- a/actions/designadminpanel.php
+++ b/actions/designadminpanel.php
@@ -272,11 +272,11 @@ class DesignadminpanelAction extends AdminPanelAction
     {
         if (!empty($values['logo']) &&
             !Validate::uri($values['logo'], array('allowed_schemes' => array('http', 'https')))) {
-            $this->clientError(_("Invalid logo URL."));
+            $this->clientError(_('Invalid logo URL.'));
         }
 
         if (!in_array($values['theme'], Theme::listAvailable())) {
-            $this->clientError(sprintf(_("Theme not available: %s"), $values['theme']));
+            $this->clientError(sprintf(_("Theme not available: %s."), $values['theme']));
         }
     }
 
diff --git a/actions/disfavor.php b/actions/disfavor.php
index 6269f1bd25..3ccdd69af2 100644
--- a/actions/disfavor.php
+++ b/actions/disfavor.php
@@ -71,7 +71,7 @@ class DisfavorAction extends Action
         $notice = Notice::staticGet($id);
         $token  = $this->trimmed('token-'.$notice->id);
         if (!$token || $token != common_session_token()) {
-            $this->clientError(_("There was a problem with your session token. Try again, please."));
+            $this->clientError(_('There was a problem with your session token. Try again, please.'));
             return;
         }
         $fave            = new Fave();
diff --git a/actions/favor.php b/actions/favor.php
index afca9768ae..475912fd0b 100644
--- a/actions/favor.php
+++ b/actions/favor.php
@@ -72,7 +72,7 @@ class FavorAction extends Action
         $notice = Notice::staticGet($id);
         $token  = $this->trimmed('token-'.$notice->id);
         if (!$token || $token != common_session_token()) {
-            $this->clientError(_("There was a problem with your session token. Try again, please."));
+            $this->clientError(_('There was a problem with your session token. Try again, please.'));
             return;
         }
         if ($user->hasFave($notice)) {
diff --git a/actions/grantrole.php b/actions/grantrole.php
index cd6bd4d79a..b8b23d02e9 100644
--- a/actions/grantrole.php
+++ b/actions/grantrole.php
@@ -59,11 +59,11 @@ class GrantRoleAction extends ProfileFormAction
         
         $this->role = $this->arg('role');
         if (!Profile_role::isValid($this->role)) {
-            $this->clientError(_("Invalid role."));
+            $this->clientError(_('Invalid role.'));
             return false;
         }
         if (!Profile_role::isSettable($this->role)) {
-            $this->clientError(_("This role is reserved and cannot be set."));
+            $this->clientError(_('This role is reserved and cannot be set.'));
             return false;
         }
 
@@ -72,14 +72,14 @@ class GrantRoleAction extends ProfileFormAction
         assert(!empty($cur)); // checked by parent
 
         if (!$cur->hasRight(Right::GRANTROLE)) {
-            $this->clientError(_("You cannot grant user roles on this site."));
+            $this->clientError(_('You cannot grant user roles on this site.'));
             return false;
         }
 
         assert(!empty($this->profile)); // checked by parent
 
         if ($this->profile->hasRole($this->role)) {
-            $this->clientError(_("User already has this role."));
+            $this->clientError(_('User already has this role.'));
             return false;
         }
 
diff --git a/actions/invite.php b/actions/invite.php
index 54b2de62ac..5dac048b06 100644
--- a/actions/invite.php
+++ b/actions/invite.php
@@ -38,7 +38,7 @@ class InviteAction extends CurrentUserDesignAction
         if (!common_config('invite', 'enabled')) {
             $this->clientError(_('Invites have been disabled.'));
         } else if (!common_logged_in()) {
-            $this->clientError(sprintf(_('You must be logged in to invite other users to use %s'),
+            $this->clientError(sprintf(_('You must be logged in to invite other users to use %s.'),
                                         common_config('site', 'name')));
             return;
         } else if ($_SERVER['REQUEST_METHOD'] == 'POST') {
diff --git a/actions/microsummary.php b/actions/microsummary.php
index 5c761e8bb6..d145dc3bc7 100644
--- a/actions/microsummary.php
+++ b/actions/microsummary.php
@@ -66,7 +66,7 @@ class MicrosummaryAction extends Action
         $notice = $user->getCurrentNotice();
         
         if (!$notice) {
-            $this->clientError(_('No current status'), 404);
+            $this->clientError(_('No current status.'), 404);
         }
         
         header('Content-Type: text/plain');
diff --git a/actions/oauthconnectionssettings.php b/actions/oauthconnectionssettings.php
index f125f4c631..8a206d7101 100644
--- a/actions/oauthconnectionssettings.php
+++ b/actions/oauthconnectionssettings.php
@@ -183,7 +183,7 @@ class OauthconnectionssettingsAction extends ConnectSettingsAction
 
         if (!$result) {
             common_log_db_error($orig, 'DELETE', __FILE__);
-            $this->clientError(_('Unable to revoke access for app: ' . $app->id));
+            $this->clientError(sprintf(_('Unable to revoke access for app: %s.'), $app->id));
             return false;
         }
 
@@ -195,7 +195,7 @@ class OauthconnectionssettingsAction extends ConnectSettingsAction
 
     function showEmptyListMessage()
     {
-        $message = sprintf(_('You have not authorized any applications to use your account.'));
+        $message = _('You have not authorized any applications to use your account.');
 
         $this->elementStart('div', 'guide');
         $this->raw(common_markup_to_html($message));
diff --git a/actions/pathsadminpanel.php b/actions/pathsadminpanel.php
index 9155a7e428..7ff3c2583a 100644
--- a/actions/pathsadminpanel.php
+++ b/actions/pathsadminpanel.php
@@ -154,19 +154,19 @@ class PathsadminpanelAction extends AdminPanelAction
         // Validate theme dir
 
         if (!empty($values['theme']['dir']) && !is_readable($values['theme']['dir'])) {
-            $this->clientError(sprintf(_("Theme directory not readable: %s"), $values['theme']['dir']));
+            $this->clientError(sprintf(_("Theme directory not readable: %s."), $values['theme']['dir']));
         }
 
         // Validate avatar dir
 
         if (empty($values['avatar']['dir']) || !is_writable($values['avatar']['dir'])) {
-            $this->clientError(sprintf(_("Avatar directory not writable: %s"), $values['avatar']['dir']));
+            $this->clientError(sprintf(_("Avatar directory not writable: %s."), $values['avatar']['dir']));
         }
 
         // Validate background dir
 
         if (empty($values['background']['dir']) || !is_writable($values['background']['dir'])) {
-            $this->clientError(sprintf(_("Background directory not writable: %s"), $values['background']['dir']));
+            $this->clientError(sprintf(_("Background directory not writable: %s."), $values['background']['dir']));
         }
 
         // Validate locales dir
@@ -174,13 +174,13 @@ class PathsadminpanelAction extends AdminPanelAction
         // XXX: What else do we need to validate for lacales path here? --Z
 
         if (!empty($values['site']['locale_path']) && !is_readable($values['site']['locale_path'])) {
-            $this->clientError(sprintf(_("Locales directory not readable: %s"), $values['site']['locale_path']));
+            $this->clientError(sprintf(_("Locales directory not readable: %s."), $values['site']['locale_path']));
         }
 
         // Validate SSL setup
 
         if (mb_strlen($values['site']['sslserver']) > 255) {
-            $this->clientError(_("Invalid SSL server. The maximum length is 255 characters."));
+            $this->clientError(_('Invalid SSL server. The maximum length is 255 characters.'));
         }
     }
 
diff --git a/actions/peopletag.php b/actions/peopletag.php
index 32652f7551..7287cfbf99 100644
--- a/actions/peopletag.php
+++ b/actions/peopletag.php
@@ -65,7 +65,7 @@ class PeopletagAction extends Action
         $this->tag = $this->trimmed('tag');
 
         if (!common_valid_profile_tag($this->tag)) {
-            $this->clientError(sprintf(_('Not a valid people tag: %s'),
+            $this->clientError(sprintf(_('Not a valid people tag: %s.'),
                 $this->tag));
             return;
         }
diff --git a/actions/postnotice.php b/actions/postnotice.php
index b2f6f1bb95..694c7808d9 100644
--- a/actions/postnotice.php
+++ b/actions/postnotice.php
@@ -92,7 +92,7 @@ class PostnoticeAction extends Action
     {
         $content = common_shorten_links($_POST['omb_notice_content']);
         if (Notice::contentTooLong($content)) {
-            $this->clientError(_('Invalid notice content'), 400);
+            $this->clientError(_('Invalid notice content.'), 400);
             return false;
         }
         $license      = $_POST['omb_notice_license'];
diff --git a/actions/public.php b/actions/public.php
index 8e9db10caf..5fc547feaf 100644
--- a/actions/public.php
+++ b/actions/public.php
@@ -80,7 +80,7 @@ class PublicAction extends Action
         $this->page = ($this->arg('page')) ? ($this->arg('page')+0) : 1;
 
         if ($this->page > MAX_PUBLIC_PAGE) {
-            $this->clientError(sprintf(_("Beyond the page limit (%s)"), MAX_PUBLIC_PAGE));
+            $this->clientError(sprintf(_("Beyond the page limit (%s)."), MAX_PUBLIC_PAGE));
         }
 
         common_set_returnto($this->selfUrl());
diff --git a/actions/repeat.php b/actions/repeat.php
index e112496bc1..893cae4ffd 100644
--- a/actions/repeat.php
+++ b/actions/repeat.php
@@ -54,21 +54,21 @@ class RepeatAction extends Action
         $this->user = common_current_user();
 
         if (empty($this->user)) {
-            $this->clientError(_("Only logged-in users can repeat notices."));
+            $this->clientError(_('Only logged-in users can repeat notices.'));
             return false;
         }
 
         $id = $this->trimmed('notice');
 
         if (empty($id)) {
-            $this->clientError(_("No notice specified."));
+            $this->clientError(_('No notice specified.'));
             return false;
         }
 
         $this->notice = Notice::staticGet('id', $id);
 
         if (empty($this->notice)) {
-            $this->clientError(_("No notice specified."));
+            $this->clientError(_('No notice specified.'));
             return false;
         }
 
@@ -80,14 +80,14 @@ class RepeatAction extends Action
         $token  = $this->trimmed('token-'.$id);
 
         if (empty($token) || $token != common_session_token()) {
-            $this->clientError(_("There was a problem with your session token. Try again, please."));
+            $this->clientError(_('There was a problem with your session token. Try again, please.'));
             return false;
         }
 
         $profile = $this->user->getProfile();
 
         if ($profile->hasRepeated($id)) {
-            $this->clientError(_("You already repeated that notice."));
+            $this->clientError(_('You already repeated that notice.'));
             return false;
         }
 
diff --git a/actions/revokerole.php b/actions/revokerole.php
index b78c1c25a4..c67b70fdaf 100644
--- a/actions/revokerole.php
+++ b/actions/revokerole.php
@@ -59,11 +59,11 @@ class RevokeRoleAction extends ProfileFormAction
         
         $this->role = $this->arg('role');
         if (!Profile_role::isValid($this->role)) {
-            $this->clientError(_("Invalid role."));
+            $this->clientError(_('Invalid role.'));
             return false;
         }
         if (!Profile_role::isSettable($this->role)) {
-            $this->clientError(_("This role is reserved and cannot be set."));
+            $this->clientError(_('This role is reserved and cannot be set.'));
             return false;
         }
 
@@ -72,7 +72,7 @@ class RevokeRoleAction extends ProfileFormAction
         assert(!empty($cur)); // checked by parent
 
         if (!$cur->hasRight(Right::REVOKEROLE)) {
-            $this->clientError(_("You cannot revoke user roles on this site."));
+            $this->clientError(_('You cannot revoke user roles on this site.'));
             return false;
         }
 
diff --git a/actions/sandbox.php b/actions/sandbox.php
index 5b034ff078..d1ef4c86b2 100644
--- a/actions/sandbox.php
+++ b/actions/sandbox.php
@@ -62,14 +62,14 @@ class SandboxAction extends ProfileFormAction
         assert(!empty($cur)); // checked by parent
 
         if (!$cur->hasRight(Right::SANDBOXUSER)) {
-            $this->clientError(_("You cannot sandbox users on this site."));
+            $this->clientError(_('You cannot sandbox users on this site.'));
             return false;
         }
 
         assert(!empty($this->profile)); // checked by parent
 
         if ($this->profile->isSandboxed()) {
-            $this->clientError(_("User is already sandboxed."));
+            $this->clientError(_('User is already sandboxed.'));
             return false;
         }
 
diff --git a/actions/shownotice.php b/actions/shownotice.php
index a23027f7c5..7be9618f86 100644
--- a/actions/shownotice.php
+++ b/actions/shownotice.php
@@ -97,7 +97,7 @@ class ShownoticeAction extends OwnerDesignAction
         $this->profile = $this->notice->getProfile();
 
         if (empty($this->profile)) {
-            $this->serverError(_('Notice has no profile'), 500);
+            $this->serverError(_('Notice has no profile.'), 500);
             return false;
         }
 
diff --git a/actions/silence.php b/actions/silence.php
index 206e5ba878..09cc480d9e 100644
--- a/actions/silence.php
+++ b/actions/silence.php
@@ -62,14 +62,14 @@ class SilenceAction extends ProfileFormAction
         assert(!empty($cur)); // checked by parent
 
         if (!$cur->hasRight(Right::SILENCEUSER)) {
-            $this->clientError(_("You cannot silence users on this site."));
+            $this->clientError(_('You cannot silence users on this site.'));
             return false;
         }
 
         assert(!empty($this->profile)); // checked by parent
 
         if ($this->profile->isSilenced()) {
-            $this->clientError(_("User is already silenced."));
+            $this->clientError(_('User is already silenced.'));
             return false;
         }
 
diff --git a/actions/siteadminpanel.php b/actions/siteadminpanel.php
index e5482987fb..4238b3e85a 100644
--- a/actions/siteadminpanel.php
+++ b/actions/siteadminpanel.php
@@ -130,7 +130,7 @@ class SiteadminpanelAction extends AdminPanelAction
         // Validate site name
 
         if (empty($values['site']['name'])) {
-            $this->clientError(_("Site name must have non-zero length."));
+            $this->clientError(_('Site name must have non-zero length.'));
         }
 
         // Validate email
@@ -168,7 +168,7 @@ class SiteadminpanelAction extends AdminPanelAction
         // Validate dupe limit
 
         if (!Validate::number($values['site']['dupelimit'], array('min' => 1))) {
-            $this->clientError(_("Dupe limit must 1 or more seconds."));
+            $this->clientError(_("Dupe limit must be one or more seconds."));
         }
 
     }
diff --git a/actions/sitenoticeadminpanel.php b/actions/sitenoticeadminpanel.php
index a68cc699ca..bdcaa23557 100644
--- a/actions/sitenoticeadminpanel.php
+++ b/actions/sitenoticeadminpanel.php
@@ -110,7 +110,7 @@ class SitenoticeadminpanelAction extends AdminPanelAction
 
         if (mb_strlen($siteNotice) > 255)  {
             $this->clientError(
-                _('Max length for the site-wide notice is 255 chars')
+                _('Max length for the site-wide notice is 255 chars.')
             );
         }
 
diff --git a/actions/snapshotadminpanel.php b/actions/snapshotadminpanel.php
index a0c2315bc1..df6b168dc8 100644
--- a/actions/snapshotadminpanel.php
+++ b/actions/snapshotadminpanel.php
@@ -124,13 +124,13 @@ class SnapshotadminpanelAction extends AdminPanelAction
         // Validate snapshot run value
 
         if (!in_array($values['snapshot']['run'], array('web', 'cron', 'never'))) {
-            $this->clientError(_("Invalid snapshot run value."));
+            $this->clientError(_('Invalid snapshot run value.'));
         }
 
         // Validate snapshot frequency value
 
         if (!Validate::number($values['snapshot']['frequency'])) {
-            $this->clientError(_("Snapshot frequency must be a number."));
+            $this->clientError(_('Snapshot frequency must be a number.'));
         }
 
         // Validate report URL
@@ -141,7 +141,7 @@ class SnapshotadminpanelAction extends AdminPanelAction
                 array('allowed_schemes' => array('http', 'https')
             )
         )) {
-            $this->clientError(_("Invalid snapshot report URL."));
+            $this->clientError(_('Invalid snapshot report URL.'));
         }
     }
 }
diff --git a/actions/unsandbox.php b/actions/unsandbox.php
index 22f4d8e766..d50b5072ee 100644
--- a/actions/unsandbox.php
+++ b/actions/unsandbox.php
@@ -62,14 +62,14 @@ class UnsandboxAction extends ProfileFormAction
         assert(!empty($cur)); // checked by parent
 
         if (!$cur->hasRight(Right::SANDBOXUSER)) {
-            $this->clientError(_("You cannot sandbox users on this site."));
+            $this->clientError(_('You cannot sandbox users on this site.'));
             return false;
         }
 
         assert(!empty($this->profile)); // checked by parent
 
         if (!$this->profile->isSandboxed()) {
-            $this->clientError(_("User is not sandboxed."));
+            $this->clientError(_('User is not sandboxed.'));
             return false;
         }
 
diff --git a/actions/unsilence.php b/actions/unsilence.php
index 9ff1b828b0..7d282c3661 100644
--- a/actions/unsilence.php
+++ b/actions/unsilence.php
@@ -62,14 +62,14 @@ class UnsilenceAction extends ProfileFormAction
         assert(!empty($cur)); // checked by parent
 
         if (!$cur->hasRight(Right::SILENCEUSER)) {
-            $this->clientError(_("You cannot silence users on this site."));
+            $this->clientError(_('You cannot silence users on this site.'));
             return false;
         }
 
         assert(!empty($this->profile)); // checked by parent
 
         if (!$this->profile->isSilenced()) {
-            $this->clientError(_("User is not silenced."));
+            $this->clientError(_('User is not silenced.'));
             return false;
         }
 
diff --git a/actions/unsubscribe.php b/actions/unsubscribe.php
index 6bb10d448b..57ca15d687 100644
--- a/actions/unsubscribe.php
+++ b/actions/unsubscribe.php
@@ -74,7 +74,7 @@ class UnsubscribeAction extends Action
         $other_id = $this->arg('unsubscribeto');
 
         if (!$other_id) {
-            $this->clientError(_('No profile id in request.'));
+            $this->clientError(_('No profile ID in request.'));
             return;
         }
 
diff --git a/actions/userauthorization.php b/actions/userauthorization.php
index 7f71c60dbe..e896ff96ca 100644
--- a/actions/userauthorization.php
+++ b/actions/userauthorization.php
@@ -69,7 +69,7 @@ class UserauthorizationAction extends Action
             $profile = $user->getProfile();
             if (!$profile) {
                 common_log_db_error($user, 'SELECT', __FILE__);
-                $this->serverError(_('User without matching profile'));
+                $this->serverError(_('User without matching profile.'));
                 return;
             }
 
diff --git a/actions/userrss.php b/actions/userrss.php
index e03eb93566..cf7d18ca88 100644
--- a/actions/userrss.php
+++ b/actions/userrss.php
@@ -103,7 +103,7 @@ class UserrssAction extends Rss10Action
         $profile = $user->getProfile();
         if (!$profile) {
             common_log_db_error($user, 'SELECT', __FILE__);
-            $this->serverError(_('User without matching profile'));
+            $this->serverError(_('User without matching profile.'));
             return null;
         }
         $avatar = $profile->getAvatar(AVATAR_PROFILE_SIZE);