diff --git a/library/src/main/java/org/mustangproject/DirectDebit.java b/library/src/main/java/org/mustangproject/DirectDebit.java
index e4ac9a85..cc408eb7 100644
--- a/library/src/main/java/org/mustangproject/DirectDebit.java
+++ b/library/src/main/java/org/mustangproject/DirectDebit.java
@@ -20,7 +20,8 @@ public class DirectDebit implements IZUGFeRDTradeSettlementDebit {
 	 * bean constructor
 	 */
 	public DirectDebit() {
-
+		this.IBAN = "";
+		this.mandate = "";
 	}
 
 	/***