diff --git a/modules/backend/formwidgets/Relation.php b/modules/backend/formwidgets/Relation.php
index 609927d95..84810ffd6 100644
--- a/modules/backend/formwidgets/Relation.php
+++ b/modules/backend/formwidgets/Relation.php
@@ -2,6 +2,7 @@
 
 use Lang;
 use Backend\Classes\FormWidgetBase;
+use ApplicationException;
 use SystemException;
 use Illuminate\Database\Eloquent\Relations\Relation as RelationBase;