diff --git a/mod/forum/lib.php b/mod/forum/lib.php
index 45bc8474c04..f1f158332f2 100644
--- a/mod/forum/lib.php
+++ b/mod/forum/lib.php
@@ -4601,7 +4601,7 @@ function forum_get_subscribe_link($forum, $context, $messages = array(), $cantac
         return $messages['cantaccessgroup'];
     } else {
         if (!is_enrolled($context, $USER, '', true)) {
-            return get_string('no');
+            return '';
         }
         if (is_null($subscribed_forums)) {
             $subscribed = forum_is_subscribed($USER->id, $forum);