--- a/hgext/evolve.py	Tue Aug 12 21:02:34 2014 -0400
+++ b/hgext/evolve.py	Tue Sep 30 10:27:54 2014 -0500
@@ -1011,7 +1011,7 @@
 def tryimportone(orig, ui, repo, hunk, parents, opts, *args, **kwargs):
     extracted = patch.extract(ui, hunk)
     expected = extracted[5]
-    if extracted is not None:
+    if expected is not None:
         expected = node.bin(expected)
     oldextract = patch.extract
     try: