diff --git a/lms/nladmin-system/src/main/java/org/nl/wms/st/returns/wql/QST_IVT_INANDOUTRETRUN.wql b/lms/nladmin-system/src/main/java/org/nl/wms/st/returns/wql/QST_IVT_INANDOUTRETRUN.wql
index d3dd06d2a..5dfccaae8 100644
--- a/lms/nladmin-system/src/main/java/org/nl/wms/st/returns/wql/QST_IVT_INANDOUTRETRUN.wql
+++ b/lms/nladmin-system/src/main/java/org/nl/wms/st/returns/wql/QST_IVT_INANDOUTRETRUN.wql
@@ -63,7 +63,7 @@
 		PAGEQUERY
 			SELECT DISTINCT
             	mst.*,
-            	dtl.source_bill_type,
+            	IFNULL( dtl.source_bill_type, '' ) AS source_bill_type,
             	IFNULL(dtl.vbeln,'') AS vbeln,
             	user.person_name AS upload_name
             FROM