diff --git a/mercurial/sshserver.py b/mercurial/sshserver.py
--- a/mercurial/sshserver.py
+++ b/mercurial/sshserver.py
@@ -124,7 +124,7 @@ class sshserver(object):
     def client_url(self):
         client = os.environ.get('SSH_CLIENT', '').split(' ', 1)[0]
         return 'remote:ssh:' + client
-        
+
     def do_unbundle(self):
         their_heads = self.getarg()[1].split()