diff -r 63e45aee46d4 -r 31f32a96e1e3 mercurial/phases.py
--- a/mercurial/phases.py	Tue Sep 11 00:12:07 2012 +0200
+++ b/mercurial/phases.py	Tue Sep 11 08:36:09 2012 -0700
@@ -315,7 +315,7 @@
     return keys
 
 def pushphase(repo, nhex, oldphasestr, newphasestr):
-    """List phases root for serialisation over pushkey"""
+    """List phases root for serialization over pushkey"""
     lock = repo.lock()
     try:
         currentphase = repo[nhex].phase()