diff --git a/lang/en/error.php b/lang/en/error.php
index 749cd1000d92d..67819980a07c2 100644
--- a/lang/en/error.php
+++ b/lang/en/error.php
@@ -388,8 +388,8 @@
$string['loginasonecourse'] = 'You cannot enter this course.
You have to terminate the "Login as" session before entering any other course.';
$string['maxbytesfile'] = 'The file {$a->file} is too large. The maximum size you can upload is {$a->size}.';
$string['maxareabytes'] = 'The file is larger than the space remaining in this area.';
+$string['messageundeliveredbynotificationsettings'] = 'The message could not be sent because personal messages between users (in Notification settings) has been disabled by a site administrator.';
$string['messagingdisable'] = 'Messaging is disabled on this site';
-$string['messageundeliveredbynotificationsettings'] = 'Message failed to deliver. Please check the notification settings.';
$string['mimetexisnotexist'] = 'Your system is not configured to run mimeTeX. You need to obtain the C source from https://www.forkosh.com/mimetex.zip, compile it and put the executable into your moodle/filter/tex/ directory.';
$string['mimetexnotexecutable'] = 'Custom mimetex is not executable!';
$string['missingfield'] = 'Field "{$a}" is missing';