--- a/mercurial/revset.py	Thu Oct 16 23:10:44 2014 -0700
+++ b/mercurial/revset.py	Thu Oct 16 23:11:25 2014 -0700
@@ -370,7 +370,7 @@
         raise error.ParseError(_("~ expects a number"))
     ps = set()
     cl = repo.changelog
-    for r in getset(repo, baseset(cl), x):
+    for r in getset(repo, fullreposet(repo), x):
         for i in range(n):
             r = cl.parentrevs(r)[0]
         ps.add(r)