diff --git a/app/Collection.php b/app/Collection.php
index 7be40f726..2e7b4967c 100644
--- a/app/Collection.php
+++ b/app/Collection.php
@@ -39,7 +39,7 @@ class Collection extends Model
             'collection_id',
             'id',
             'id',
-            'object_id',
+            'object_id'
         );
     }