diff --git a/mod/forum/lang/en/forum.php b/mod/forum/lang/en/forum.php
index 7c775c8d549..fac1454151b 100644
--- a/mod/forum/lang/en/forum.php
+++ b/mod/forum/lang/en/forum.php
@@ -360,6 +360,7 @@ $string['postmailinfo'] = 'This is a copy of a message posted on the {$a} websit
 
 To reply click on this link:';
 $string['postmailnow'] = '<p>This post will be mailed out immediately to all forum subscribers.</p>';
+$string['postmailsubject'] = '{$a->courseshortname}: {$a->subject}';
 $string['postrating1'] = 'Mostly separate knowing';
 $string['postrating2'] = 'Separate and connected';
 $string['postrating3'] = 'Mostly connected knowing';
diff --git a/mod/forum/lib.php b/mod/forum/lib.php
index 37bae10900c..49dee5950ef 100644
--- a/mod/forum/lib.php
+++ b/mod/forum/lib.php
@@ -731,7 +731,11 @@ function forum_cron() {
 
                 $shortname = format_string($course->shortname, true, array('context' => context_course::instance($course->id)));
 
-                $postsubject = html_to_text("$shortname: ".format_string($post->subject, true));
+                $a = new stdClass();
+                $a->courseshortname = $shortname;
+                $a->forumname = $cleanforumname;
+                $a->subject = format_string($post->subject, true);
+                $postsubject = html_to_text(get_string('postmailsubject', 'forum', $a));
                 $posttext = forum_make_mail_text($course, $cm, $forum, $discussion, $post, $userfrom, $userto);
                 $posthtml = forum_make_mail_html($course, $cm, $forum, $discussion, $post, $userfrom, $userto);