--- a/src/JavaVM.st	Thu Aug 23 18:23:13 2012 +0000
+++ b/src/JavaVM.st	Thu Aug 23 18:29:19 2012 +0000
@@ -19315,7 +19315,7 @@
 
     "/ Here, install Java lookup as Java may send a messages to that
     "/ object
-    (aClass isJavaClass not and:[aClass isJavaArrayClass not]) ifTrue:[
+    (aClass isJavaClass not and:[aClass isJavaArrayClass not and:[aClass isJavaPrimitiveType not]]) ifTrue:[
         aClass lookupObject: JavaLookup instance.
     ].
     javaClassObj := (vm classForName: 'java.lang.Class') new.