diff --git a/models/rbacDB/AbstractItem.php b/models/rbacDB/AbstractItem.php
index fae8ae59..34882abe 100644
--- a/models/rbacDB/AbstractItem.php
+++ b/models/rbacDB/AbstractItem.php
@@ -265,7 +265,7 @@ public static function beforeAddChildren($parentName, $childrenNames, $throwExce
 		$event->trigger(get_called_class(), self::EVENT_BEFORE_ADD_CHILDREN, $event);
 	}
 
-	public static function beforeRemoveChildren($parentName, $childrenNames)
+	public static function beforeRemoveChildren($parentName, $childrenNames,$throwException = false)
 	{
 		$event = new AbstractItemEvent(compact('parentName', 'childrenNames', 'throwException'));
 		$event->trigger(get_called_class(), self::EVENT_BEFORE_REMOVE_CHILDREN, $event);