--- a/mercurial/discovery.py	Fri Jan 20 14:19:13 2012 -0600
+++ b/mercurial/discovery.py	Fri Jan 20 00:27:11 2012 +0100
@@ -116,7 +116,7 @@
         sets = repo.changelog.findcommonmissing(og.commonheads, onlyheads)
         og._common, allmissing = sets
         og._missing = missing = []
-        og._excluded = excluded = []
+        og.excluded = excluded = []
         for node in allmissing:
             if repo[node].phase() >= phases.secret:
                 excluded.append(node)