--- a/mercurial/merge.py	Tue Oct 14 22:48:44 2014 -0700
+++ b/mercurial/merge.py	Tue Oct 14 23:18:07 2014 -0700
@@ -424,7 +424,7 @@
     # Compare manifests
     diff = m1.diff(m2)
 
-    for f, ((n1, n2), (fl1, fl2)) in diff.iteritems():
+    for f, ((n1, fl1), (n2, fl2)) in diff.iteritems():
         if partial and not partial(f):
             continue
         if n1 and n2: