--- a/mercurial/vfs.py	Wed Mar 08 18:11:41 2017 -0500
+++ b/mercurial/vfs.py	Wed Jan 14 01:15:26 2015 +0100
@@ -224,7 +224,7 @@
         return util.unlink(self.join(path))
 
     def unlinkpath(self, path=None, ignoremissing=False):
-        return util.unlinkpath(self.join(path), ignoremissing)
+        return util.unlinkpath(self.join(path), ignoremissing=ignoremissing)
 
     def utime(self, path=None, t=None):
         return os.utime(self.join(path), t)