diff --git a/mod/forum/lang/en/deprecated.txt b/mod/forum/lang/en/deprecated.txt
index 619038ebe38..caf084cb798 100644
--- a/mod/forum/lang/en/deprecated.txt
+++ b/mod/forum/lang/en/deprecated.txt
@@ -1,4 +1,3 @@
-subscribersto,mod_forum
 postmailinfo,mod_forum
 emaildigestupdated,mod_forum
 emaildigestupdated_default,mod_forum
diff --git a/mod/forum/lang/en/forum.php b/mod/forum/lang/en/forum.php
index bc6686d349f..277c318a285 100644
--- a/mod/forum/lang/en/forum.php
+++ b/mod/forum/lang/en/forum.php
@@ -554,9 +554,6 @@ $string['yournewquestion'] = 'Your new question';
 $string['yournewtopic'] = 'Your new discussion topic';
 $string['yourreply'] = 'Your reply';
 
-// Deprecated since Moodle 3.0.
-$string['subscribersto'] = 'Subscribers to "{$a->name}"';
-
 // Deprecated since Moodle 3.1.
 $string['postmailinfo'] = 'This is a copy of a message posted on the {$a} website.