diff --git a/cust-services/src/main/java/de/hsadmin/service/customer/SEPADirectDebitService.java b/cust-services/src/main/java/de/hsadmin/service/customer/SEPADirectDebitService.java
index ae5525b..6b1ad3c 100644
--- a/cust-services/src/main/java/de/hsadmin/service/customer/SEPADirectDebitService.java
+++ b/cust-services/src/main/java/de/hsadmin/service/customer/SEPADirectDebitService.java
@@ -92,6 +92,7 @@ public class SEPADirectDebitService extends AbstractModule<SEPADirectDebitVO> im
 		query.setParameter("bankIBAN", prototype.get("bankIBAN").getValue());
 		query.setParameter("bankBIC", prototype.get("bankBIC").getValue());
 		query.setParameter("customer", prototype.get("customer").getValue());
+		query.setParameter("mandatRef", prototype.get("mandatRef").getValue());
 		query.setParameter("mandatSigned", prototype.get("mandatSigned").getValue());
 		return (SEPADirectDebit) query.getSingleResult();
 	}