diff -r 67964cda8701 -r e34106fa0dc3 mercurial/keepalive.py
--- a/mercurial/keepalive.py	Sat May 12 16:00:57 2012 +0200
+++ b/mercurial/keepalive.py	Sat May 12 16:00:58 2012 +0200
@@ -534,7 +534,7 @@
         if self.auto_open:
             self.connect()
         else:
-            raise httplib.NotConnected()
+            raise httplib.NotConnected
 
     # send the data to the server. if we get a broken pipe, then close
     # the socket. we want to reconnect when somebody tries to send again.