diff -r b1639e98e8a1 -r f3245f22771c mercurial/commands.py
--- a/mercurial/commands.py	Wed Jun 13 23:06:34 2012 +0200
+++ b/mercurial/commands.py	Wed Apr 10 13:12:24 2013 +0200
@@ -1299,10 +1299,6 @@
 
     extra = {}
     if opts.get('close_branch'):
-        if repo['.'].node() not in repo.branchheads():
-            # The topo heads set is included in the branch heads set of the
-            # current branch, so it's sufficient to test branchheads
-            raise util.Abort(_('can only close branch heads'))
         extra['close'] = 1
 
     branch = repo[None].branch()