Index: WriteReplaceSerializer.java
===================================================================
--- WriteReplaceSerializer.java	(revision 5270)
+++ WriteReplaceSerializer.java	(working copy)
@@ -74,6 +74,9 @@
 				ClassLoader loader)
   {
     introspectWriteReplace(cl, loader);
+
+    if (_writeReplace != null)
+        _writeReplace.setAccessible(true);
   }
 
   private void introspectWriteReplace(Class cl, ClassLoader loader)