diff --git a/extensions/mentions/src/Listener/AddFilterByMentions.php b/extensions/mentions/src/Listener/AddFilterByMentions.php
index 9bf2ea5a2..e25106d20 100755
--- a/extensions/mentions/src/Listener/AddFilterByMentions.php
+++ b/extensions/mentions/src/Listener/AddFilterByMentions.php
@@ -10,12 +10,13 @@
 namespace Flarum\Mentions\Listener;
 
 use Flarum\Event\ConfigurePostsQuery;
+use Illuminate\Support\Arr;
 
 class AddFilterByMentions
 {
     public function handle(ConfigurePostsQuery $event)
     {
-        if ($mentionedId = array_get($event->filter, 'mentioned')) {
+        if ($mentionedId = Arr::get($event->filter, 'mentioned')) {
             $event->query->join('post_mentions_user', 'posts.id', '=', 'post_mentions_user.post_id')
                 ->where('post_mentions_user.mentions_user_id', '=', $mentionedId);
         }