diff --git a/org.adempiere.base/src/org/compiere/model/PO.java b/org.adempiere.base/src/org/compiere/model/PO.java
index 35ca1c1a36..d2e3e27201 100644
--- a/org.adempiere.base/src/org/compiere/model/PO.java
+++ b/org.adempiere.base/src/org/compiere/model/PO.java
@@ -5753,7 +5753,9 @@ public abstract class PO
 				} else {
 					fkval = Integer.valueOf(get_ValueAsInt(index));
 				}
-				if (fkval != null) {
+				if (fkval != null
+					&& (   (fkval instanceof Integer && ((Integer)fkval).intValue() > 0)
+						|| (fkval instanceof String && ((String)fkval).length() > 0) )) {
 					MTable ft = MTable.get(getCtx(), fktab);
 					boolean systemAccess = false;
 					String accessLevel = ft.getAccessLevel();