diff --git a/mercurial/pycompat.py b/mercurial/pycompat.py
--- a/mercurial/pycompat.py
+++ b/mercurial/pycompat.py
@@ -331,6 +331,7 @@
 else:
     import cStringIO
 
+    xrange = xrange
     unicode = unicode
     bytechr = chr
     byterepr = repr