--- a/hgext/evolve.py	Tue May 12 13:52:29 2015 -0700
+++ b/hgext/evolve.py	Wed May 13 09:03:11 2015 -0700
@@ -1303,8 +1303,8 @@
         return graftcmd(ui, repo, old_obsolete=True, **{'continue': True})
     # Rev specified on the commands line
     if revopt:
-        revs = set(repo.revs(revopt))
-        troubled = set(repo.revs('troubled()'))
+        revs = repo.revs(revopt)
+        troubled = repo.revs('troubled()')
         _revs = revs & troubled
         if not _revs:
             ui.write_err("No troubled changes in the specified revset")