diff --git a/services/univention-s4-connector/modules/univention/s4connector/s4/__init__.py b/services/univention-s4-connector/modules/univention/s4connector/s4/__init__.py
index ba9d456dee..7ffcfafec2 100644
--- a/services/univention-s4-connector/modules/univention/s4connector/s4/__init__.py
+++ b/services/univention-s4-connector/modules/univention/s4connector/s4/__init__.py
@@ -2801,11 +2801,7 @@ class s4(univention.s4connector.ucs):
 					continue
 				ud.debug(ud.LDAP, ud.INFO, "delete: %s" % result[0])
 				subobject_s4 = {'dn': result[0], 'modtype': 'delete', 'attributes': result[1]}
-				key = None
-				for k in self.property.keys():
-					if self.modules[k].identify(result[0], result[1]):
-						key = k
-						break
+				key = self.__identify(subobject_s4)
 				back_mapped_subobject = self._object_mapping(key, subobject_s4)
 				ud.debug(ud.LDAP, ud.WARN, "delete subobject: %s" % back_mapped_subobject['dn'])
 				if not self._ignore_object(key, back_mapped_subobject):