diff --git a/org.adempiere.ui.swing/src/org/compiere/grid/ed/VLookup.java b/org.adempiere.ui.swing/src/org/compiere/grid/ed/VLookup.java
index 3b7b36373a..b56bc9b5bc 100644
--- a/org.adempiere.ui.swing/src/org/compiere/grid/ed/VLookup.java
+++ b/org.adempiere.ui.swing/src/org/compiere/grid/ed/VLookup.java
@@ -1291,6 +1291,9 @@ public class VLookup extends JComponent
 		Object value = getValue();
 		if (value == null)
 			value = selectedItem;
+		// still null means the field is empty or not selected item
+		if (value == null)
+			value = -1;
 		//	If not already exist or exact value
 		if (zoomQuery == null || value != null)
 		{
diff --git a/org.adempiere.ui.zk/WEB-INF/src/org/adempiere/webui/apps/AEnv.java b/org.adempiere.ui.zk/WEB-INF/src/org/adempiere/webui/apps/AEnv.java
index 5f430441b9..e5136ed11b 100644
--- a/org.adempiere.ui.zk/WEB-INF/src/org/adempiere/webui/apps/AEnv.java
+++ b/org.adempiere.ui.zk/WEB-INF/src/org/adempiere/webui/apps/AEnv.java
@@ -411,6 +411,9 @@ public final class AEnv
             return;
         //
         MQuery zoomQuery = lookup.getZoomQuery();
+		// still null means the field is empty or not selected item
+		if (value == null)
+			value = -1;
 
         //  If not already exist or exact value
         if (zoomQuery == null || value != null)