diff --git a/extensions/mentions/extend.php b/extensions/mentions/extend.php
index 6960bebfee..7312c7312b 100644
--- a/extensions/mentions/extend.php
+++ b/extensions/mentions/extend.php
@@ -48,8 +48,7 @@
         ->belongsToMany('mentionedBy', Post::class, 'post_mentions_post', 'mentions_post_id', 'post_id')
         ->belongsToMany('mentionsPosts', Post::class, 'post_mentions_post', 'post_id', 'mentions_post_id')
         ->belongsToMany('mentionsUsers', User::class, 'post_mentions_user', 'post_id', 'mentions_user_id')
-        ->belongsToMany('mentionsGroups', Group::class, 'post_mentions_group', 'post_id', 'mentions_group_id')
-        ->belongsToMany('mentionsUsers', User::class, 'post_mentions_user', 'post_id', 'mentions_user_id'),
+        ->belongsToMany('mentionsGroups', Group::class, 'post_mentions_group', 'post_id', 'mentions_group_id'),
 
     new Extend\Locales(__DIR__.'/locale'),