Index: src/org/hibernate/persister/entity/AbstractEntityPersister.java
===================================================================
--- src/org/hibernate/persister/entity/AbstractEntityPersister.java	(revision 15586)
+++ src/org/hibernate/persister/entity/AbstractEntityPersister.java	(working copy)
@@ -3083,7 +3083,7 @@
 				propsToUpdate[property] = true;
 			}
 		}
-		if ( isVersioned() ) {
+		if ( isVersioned() && updateability[getVersionProperty() ]) {
 			propsToUpdate[ getVersionProperty() ] =
 				Versioning.isVersionIncrementRequired( dirtyProperties, hasDirtyCollection, getPropertyVersionability() );
 		}