diff --git a/actions/apiaccountupdatedeliverydevice.php b/actions/apiaccountupdatedeliverydevice.php
index 295378aa67..2d903cb460 100644
--- a/actions/apiaccountupdatedeliverydevice.php
+++ b/actions/apiaccountupdatedeliverydevice.php
@@ -83,6 +83,7 @@ class ApiAccountUpdateDeliveryDeviceAction extends ApiAuthAction
 
         if ($_SERVER['REQUEST_METHOD'] != 'POST') {
             $this->clientError(
+                // TRANS: Client error message. POST is a HTTP command. It should not be translated.
                 _('This method requires a POST.'),
                 400, $this->format
             );
diff --git a/actions/apiaccountupdateprofile.php b/actions/apiaccountupdateprofile.php
index 9b371ea957..92d0f6b771 100644
--- a/actions/apiaccountupdateprofile.php
+++ b/actions/apiaccountupdateprofile.php
@@ -86,6 +86,7 @@ class ApiAccountUpdateProfileAction extends ApiAuthAction
 
         if ($_SERVER['REQUEST_METHOD'] != 'POST') {
             $this->clientError(
+                // TRANS: Client error. POST is a HTTP command. It should not be translated.
                 _('This method requires a POST.'),
                 400, $this->format
             );
diff --git a/actions/apiaccountupdateprofilebackgroundimage.php b/actions/apiaccountupdateprofilebackgroundimage.php
index 3537b9f979..923fb1d114 100644
--- a/actions/apiaccountupdateprofilebackgroundimage.php
+++ b/actions/apiaccountupdateprofilebackgroundimage.php
@@ -83,6 +83,7 @@ class ApiAccountUpdateProfileBackgroundImageAction extends ApiAuthAction
 
         if ($_SERVER['REQUEST_METHOD'] != 'POST') {
             $this->clientError(
+                // TRANS: Client error. POST is a HTTP command. It should not be translated.
                 _('This method requires a POST.'),
                 400, $this->format
             );
diff --git a/actions/apiaccountupdateprofilecolors.php b/actions/apiaccountupdateprofilecolors.php
index c666f9d759..9e07d80de3 100644
--- a/actions/apiaccountupdateprofilecolors.php
+++ b/actions/apiaccountupdateprofilecolors.php
@@ -107,6 +107,7 @@ class ApiAccountUpdateProfileColorsAction extends ApiAuthAction
 
         if ($_SERVER['REQUEST_METHOD'] != 'POST') {
             $this->clientError(
+                // TRANS: Client error. POST is a HTTP command. It should not be translated.
                 _('This method requires a POST.'),
                 400, $this->format
             );
diff --git a/actions/apiaccountupdateprofileimage.php b/actions/apiaccountupdateprofileimage.php
index 153ef7818e..7f868a6eb3 100644
--- a/actions/apiaccountupdateprofileimage.php
+++ b/actions/apiaccountupdateprofileimage.php
@@ -81,6 +81,7 @@ class ApiAccountUpdateProfileImageAction extends ApiAuthAction
 
         if ($_SERVER['REQUEST_METHOD'] != 'POST') {
             $this->clientError(
+                // TRANS: Client error. POST is a HTTP command. It should not be translated.
                 _('This method requires a POST.'),
                 400, $this->format
             );
diff --git a/actions/apiblockcreate.php b/actions/apiblockcreate.php
index b355cd1c7e..53844cd2f2 100644
--- a/actions/apiblockcreate.php
+++ b/actions/apiblockcreate.php
@@ -86,6 +86,7 @@ class ApiBlockCreateAction extends ApiAuthAction
 
         if ($_SERVER['REQUEST_METHOD'] != 'POST') {
             $this->clientError(
+                // TRANS: Client error. POST is a HTTP command. It should not be translated.
                 _('This method requires a POST.'),
                 400,
                 $this->format
diff --git a/actions/apiblockdestroy.php b/actions/apiblockdestroy.php
index 7ea201677e..871ce66c73 100644
--- a/actions/apiblockdestroy.php
+++ b/actions/apiblockdestroy.php
@@ -85,6 +85,7 @@ class ApiBlockDestroyAction extends ApiAuthAction
 
         if ($_SERVER['REQUEST_METHOD'] != 'POST') {
             $this->clientError(
+                // TRANS: Client error. POST is a HTTP command. It should not be translated.
                 _('This method requires a POST.'),
                 400,
                 $this->format
diff --git a/actions/apidirectmessagenew.php b/actions/apidirectmessagenew.php
index 65d065648f..44e205ebb0 100644
--- a/actions/apidirectmessagenew.php
+++ b/actions/apidirectmessagenew.php
@@ -106,6 +106,7 @@ class ApiDirectMessageNewAction extends ApiAuthAction
 
         if ($_SERVER['REQUEST_METHOD'] != 'POST') {
             $this->clientError(
+                // TRANS: Client error. POST is a HTTP command. It should not be translated.
                 _('This method requires a POST.'),
                 400,
                 $this->format
diff --git a/actions/apifavoritecreate.php b/actions/apifavoritecreate.php
index 0447a92ba2..15da010138 100644
--- a/actions/apifavoritecreate.php
+++ b/actions/apifavoritecreate.php
@@ -88,6 +88,7 @@ class ApiFavoriteCreateAction extends ApiAuthAction
 
         if ($_SERVER['REQUEST_METHOD'] != 'POST') {
             $this->clientError(
+                // TRANS: Client error. POST is a HTTP command. It should not be translated.
                 _('This method requires a POST.'),
                 400,
                 $this->format
diff --git a/actions/apifavoritedestroy.php b/actions/apifavoritedestroy.php
index 9f2efdd003..c2e1ebafc7 100644
--- a/actions/apifavoritedestroy.php
+++ b/actions/apifavoritedestroy.php
@@ -89,6 +89,7 @@ class ApiFavoriteDestroyAction extends ApiAuthAction
 
         if ($_SERVER['REQUEST_METHOD'] != 'POST') {
             $this->clientError(
+                // TRANS: Client error. POST is a HTTP command. It should not be translated.
                 _('This method requires a POST.'),
                 400,
                 $this->format
diff --git a/actions/apifriendshipscreate.php b/actions/apifriendshipscreate.php
index a7ec5b28a4..64c857c70c 100644
--- a/actions/apifriendshipscreate.php
+++ b/actions/apifriendshipscreate.php
@@ -88,6 +88,7 @@ class ApiFriendshipsCreateAction extends ApiAuthAction
 
         if ($_SERVER['REQUEST_METHOD'] != 'POST') {
             $this->clientError(
+                // TRANS: Client error. POST is a HTTP command. It should not be translated.
                 _('This method requires a POST.'),
                 400,
                 $this->format
diff --git a/actions/apifriendshipsdestroy.php b/actions/apifriendshipsdestroy.php
index 551d016823..21da23ef7c 100644
--- a/actions/apifriendshipsdestroy.php
+++ b/actions/apifriendshipsdestroy.php
@@ -88,6 +88,7 @@ class ApiFriendshipsDestroyAction extends ApiAuthAction
 
         if ($_SERVER['REQUEST_METHOD'] != 'POST') {
             $this->clientError(
+                // TRANS: Client error. POST is a HTTP command. It should not be translated.
                 _('This method requires a POST.'),
                 400,
                 $this->format
diff --git a/actions/apigroupcreate.php b/actions/apigroupcreate.php
index d216c15cd4..fa443573d6 100644
--- a/actions/apigroupcreate.php
+++ b/actions/apigroupcreate.php
@@ -102,6 +102,7 @@ class ApiGroupCreateAction extends ApiAuthAction
 
         if ($_SERVER['REQUEST_METHOD'] != 'POST') {
              $this->clientError(
+                 // TRANS: Client error. POST is a HTTP command. It should not be translated.
                  _('This method requires a POST.'),
                  400,
                  $this->format
diff --git a/actions/apigroupjoin.php b/actions/apigroupjoin.php
index 5265ec629e..a0c069974b 100644
--- a/actions/apigroupjoin.php
+++ b/actions/apigroupjoin.php
@@ -89,6 +89,7 @@ class ApiGroupJoinAction extends ApiAuthAction
 
         if ($_SERVER['REQUEST_METHOD'] != 'POST') {
             $this->clientError(
+                // TRANS: Client error. POST is a HTTP command. It should not be translated.
                 _('This method requires a POST.'),
                 400,
                 $this->format
diff --git a/actions/apigroupleave.php b/actions/apigroupleave.php
index 8c100d58a8..c838f6c878 100644
--- a/actions/apigroupleave.php
+++ b/actions/apigroupleave.php
@@ -89,6 +89,7 @@ class ApiGroupLeaveAction extends ApiAuthAction
 
         if ($_SERVER['REQUEST_METHOD'] != 'POST') {
             $this->clientError(
+                // TRANS: Client error. POST is a HTTP command. It should not be translated.
                 _('This method requires a POST.'),
                 400,
                 $this->format
diff --git a/actions/apimediaupload.php b/actions/apimediaupload.php
index 7aa88c186b..54d7fda68f 100644
--- a/actions/apimediaupload.php
+++ b/actions/apimediaupload.php
@@ -64,6 +64,7 @@ class ApiMediaUploadAction extends ApiAuthAction
 
         if ($_SERVER['REQUEST_METHOD'] != 'POST') {
             $this->clientError(
+                // TRANS: Client error. POST is a HTTP command. It should not be translated.
                 _('This method requires a POST.'),
                 400, $this->format
             );
diff --git a/actions/apistatusesretweet.php b/actions/apistatusesretweet.php
index 9aa3374854..aae98f6378 100644
--- a/actions/apistatusesretweet.php
+++ b/actions/apistatusesretweet.php
@@ -62,6 +62,7 @@ class ApiStatusesRetweetAction extends ApiAuthAction
         parent::prepare($args);
 
         if ($_SERVER['REQUEST_METHOD'] != 'POST') {
+            // TRANS: Client error. POST is a HTTP command. It should not be translated.
             $this->clientError(_('This method requires a POST.'),
                                400, $this->format);
             return false;
diff --git a/actions/apistatusesupdate.php b/actions/apistatusesupdate.php
index fa3f611c0a..4715f70027 100644
--- a/actions/apistatusesupdate.php
+++ b/actions/apistatusesupdate.php
@@ -195,6 +195,7 @@ class ApiStatusesUpdateAction extends ApiAuthAction
 
         if ($_SERVER['REQUEST_METHOD'] != 'POST') {
             $this->clientError(
+                // TRANS: Client error. POST is a HTTP command. It should not be translated.
                 _('This method requires a POST.'),
                 400,
                 $this->format
diff --git a/plugins/OStatus/lib/salmonaction.php b/plugins/OStatus/lib/salmonaction.php
index 5fdb11abe4..f97c67edd0 100644
--- a/plugins/OStatus/lib/salmonaction.php
+++ b/plugins/OStatus/lib/salmonaction.php
@@ -38,6 +38,7 @@ class SalmonAction extends Action
         parent::prepare($args);
 
         if ($_SERVER['REQUEST_METHOD'] != 'POST') {
+            // TRANS: POST is a HTTP command. It should not be translated.
             $this->clientError(_m('This method requires a POST.'));
         }