--- a/hgext/histedit.py	Fri Jun 07 16:04:11 2013 -0500
+++ b/hgext/histedit.py	Fri Jun 07 16:59:59 2013 -0500
@@ -140,6 +140,7 @@
 
 try:
     import cPickle as pickle
+    pickle.dump # import now
 except ImportError:
     import pickle
 import os