diff --git a/org.adempiere.base.process/src/org/compiere/process/InvoiceGenerate.java b/org.adempiere.base.process/src/org/compiere/process/InvoiceGenerate.java
index aecbce230c..2f50c02662 100644
--- a/org.adempiere.base.process/src/org/compiere/process/InvoiceGenerate.java
+++ b/org.adempiere.base.process/src/org/compiere/process/InvoiceGenerate.java
@@ -179,7 +179,7 @@ public class InvoiceGenerate extends SvrProcess
 			//
 			sql.append(") AND o.C_DocType_ID IN (SELECT C_DocType_ID FROM C_DocType ")
 					.append("WHERE DocBaseType='SOO' AND DocSubTypeSO NOT IN ('ON','OB','WR')) ")
-				.append("ORDER BY AD_Org_ID, M_Warehouse_ID, PriorityRule, C_BPartner_ID, Bill_Location_ID, Bill_User_ID, C_Order_ID");
+				.append("ORDER BY o.AD_Org_ID, o.M_Warehouse_ID, o.PriorityRule, o.C_BPartner_ID, o.Bill_Location_ID, o.Bill_User_ID, o.C_Order_ID");
 		}
 	//	sql += " FOR UPDATE";