diff --git a/plugins/admin/acl/class_aclManagement.inc b/plugins/admin/acl/class_aclManagement.inc
index 11510d6164b08bfa24f7a26d35c10d899168faa3..28b3b493b419bb34b6a7f0a37d309d0b0b40eaf8 100644
--- a/plugins/admin/acl/class_aclManagement.inc
+++ b/plugins/admin/acl/class_aclManagement.inc
@@ -184,7 +184,7 @@ class aclManagement extends simpleManagement
     $type = 'aclAssignment';
 
     /* This might throw an exception which is catched in aclAssignmentCreationDialog */
-    $tabObject = objects::open($this->dn, $type);
+    $tabObject = objects::open($dn, $type);
 
     /* This will happen only if the exception is not thrown */
     $this->closeDialogs();