diff --git a/actions/finishremotesubscribe.php b/actions/finishremotesubscribe.php
index e2276b5a47..df5fe64760 100644
--- a/actions/finishremotesubscribe.php
+++ b/actions/finishremotesubscribe.php
@@ -254,7 +254,8 @@ class FinishremotesubscribeAction extends Action {
 
 		$fetcher = Auth_Yadis_Yadis::getHTTPFetcher();
 		$result = $fetcher->post($req->get_normalized_http_url(),
-								 $req->to_postdata());
+								 $req->to_postdata(),
+                                 array('User-Agent' => 'Laconica/' . LACONICA_VERSION));
 
 		common_debug('got result: "'.print_r($result,TRUE).'"', __FILE__);
 
diff --git a/actions/remotesubscribe.php b/actions/remotesubscribe.php
index 0adcc08481..c3a09bcfc2 100644
--- a/actions/remotesubscribe.php
+++ b/actions/remotesubscribe.php
@@ -33,14 +33,14 @@ class RemotesubscribeAction extends Action {
 		}
 
 		if ($_SERVER['REQUEST_METHOD'] == 'POST') {
-			
+
 			# CSRF protection
 			$token = $this->trimmed('token');
 			if (!$token || $token != common_session_token()) {
 				$this->show_form(_('There was a problem with your session token. Try again, please.'));
 				return;
 			}
-			
+
 			$this->remote_subscription();
 		} else {
 			$this->show_form();
@@ -115,7 +115,7 @@ class RemotesubscribeAction extends Action {
 		}
 
 		# XXX: a little liberal for sites that accidentally put whitespace before the xml declaration
-		
+
         $xrds =& Auth_Yadis_XRDS::parseXRDS(trim($yadis->response_text));
 
 		if (!$xrds) {
@@ -141,7 +141,7 @@ class RemotesubscribeAction extends Action {
 			$this->show_form(_('That\'s a local profile! Login to subscribe.'));
 			return;
 		}
-		
+
 		list($token, $secret) = $this->request_token($omb);
 
 		if (!$token || !$secret) {
@@ -287,7 +287,8 @@ class RemotesubscribeAction extends Action {
 		$fetcher = Auth_Yadis_Yadis::getHTTPFetcher();
 
 		$result = $fetcher->post($req->get_normalized_http_url(),
-								 $req->to_postdata());
+								 $req->to_postdata(),
+                                 array('User-Agent' => 'Laconica/' . LACONICA_VERSION));
 
 		if ($result->status != 200) {
 			return NULL;
@@ -332,7 +333,7 @@ class RemotesubscribeAction extends Action {
 			$this->server_error(_('User without matching profile'));
 			return;
 		}
-		
+
 		if ($profile->fullname) {
 			$req->set_parameter('omb_listenee_fullname', $profile->fullname);
 		}
@@ -370,7 +371,7 @@ class RemotesubscribeAction extends Action {
 		$omb['update_profile_url'] = omb_service_uri($omb[OMB_ENDPOINT_UPDATEPROFILE]);
 
 		common_ensure_session();
-		
+
 		$_SESSION['oauth_authorization_request'] = $omb;
 
 		# Redirect to authorization service
diff --git a/lib/omb.php b/lib/omb.php
index 8d33fee159..96736b4d47 100644
--- a/lib/omb.php
+++ b/lib/omb.php
@@ -128,7 +128,7 @@ function omb_broadcast_remote_subscribers($notice) {
 		if (!$posted[$rp->postnoticeurl]) {
 			common_log(LOG_DEBUG, 'Posting to ' . $rp->postnoticeurl);
 			if (omb_post_notice_keys($notice, $rp->postnoticeurl, $rp->token, $rp->secret)) {
-				common_log(LOG_DEBUG, 'Finished to ' . $rp->postnoticeurl);				
+				common_log(LOG_DEBUG, 'Finished to ' . $rp->postnoticeurl);
 				$posted[$rp->postnoticeurl] = TRUE;
 			} else {
 				common_log(LOG_DEBUG, 'Failed posting to ' . $rp->postnoticeurl);
@@ -138,7 +138,7 @@ function omb_broadcast_remote_subscribers($notice) {
 
 	$rp->free();
 	unset($rp);
-	
+
 	return true;
 }
 
@@ -149,7 +149,7 @@ function omb_post_notice($notice, $remote_profile, $subscription) {
 function omb_post_notice_keys($notice, $postnoticeurl, $tk, $secret) {
 
 	common_debug('Posting notice ' . $notice->id . ' to ' . $postnoticeurl, __FILE__);
-	
+
 	$user = User::staticGet('id', $notice->profile_id);
 
 	if (!$user) {
@@ -158,17 +158,17 @@ function omb_post_notice_keys($notice, $postnoticeurl, $tk, $secret) {
 	}
 
 	$con = omb_oauth_consumer();
-	
+
 	$token = new OAuthToken($tk, $secret);
-	
+
 	$url = $postnoticeurl;
 	$parsed = parse_url($url);
 	$params = array();
 	parse_str($parsed['query'], $params);
-	
+
 	$req = OAuthRequest::from_consumer_and_token($con, $token,
 												 'POST', $url, $params);
-	
+
 	$req->set_parameter('omb_version', OMB_VERSION_01);
 	$req->set_parameter('omb_listenee', $user->uri);
 	$req->set_parameter('omb_notice', $notice->uri);
@@ -177,23 +177,24 @@ function omb_post_notice_keys($notice, $postnoticeurl, $tk, $secret) {
 														   array('notice' =>
 																 $notice->id)));
 	$req->set_parameter('omb_notice_license', common_config('license', 'url'));
-	
+
 	$user->free();
 	unset($user);
-	
+
 	$req->sign_request(omb_hmac_sha1(), $con, $token);
 
 	# We re-use this tool's fetcher, since it's pretty good
-	
+
 	$fetcher = Auth_Yadis_Yadis::getHTTPFetcher();
 
 	if (!$fetcher) {
 		common_log(LOG_WARNING, 'Failed to initialize Yadis fetcher.', __FILE__);
 		return false;
 	}
-	
+
 	$result = $fetcher->post($req->get_normalized_http_url(),
-							 $req->to_postdata());
+							 $req->to_postdata(),
+                             array('User-Agent' => 'Laconica/' . LACONICA_VERSION));
 
 	common_debug('Got HTTP result "'.print_r($result,TRUE).'"', __FILE__);
 
@@ -275,7 +276,8 @@ function omb_update_profile($profile, $remote_profile, $subscription) {
 	common_debug('request URL = '.$req->get_normalized_http_url(), __FILE__);
 	common_debug('postdata = '.$req->to_postdata(), __FILE__);
 	$result = $fetcher->post($req->get_normalized_http_url(),
-							 $req->to_postdata());
+							 $req->to_postdata(),
+                             array('User-Agent' => 'Laconica/' . LACONICA_VERSION));
 
 	common_debug('Got HTTP result "'.print_r($result,TRUE).'"', __FILE__);