diff -r c4859aad1980 -r e8e56d8377ab hgext/mq.py
--- a/hgext/mq.py	Sat Mar 13 00:02:33 2010 +0100
+++ b/hgext/mq.py	Sat Mar 13 00:08:06 2010 +0100
@@ -1082,11 +1082,10 @@
                 self.ui.warn(_('cleaning up working directory...'))
                 node = repo.dirstate.parents()[0]
                 hg.revert(repo, node, None)
-                unknown = repo.status(unknown=True)[4]
                 # only remove unknown files that we know we touched or
                 # created while patching
-                for f in unknown:
-                    if f in all_files:
+                for f in all_files:
+                    if f not in repo.dirstate:
                         util.unlink(repo.wjoin(f))
                 self.ui.warn(_('done\n'))
                 raise