diff -r d51c658d3f04 -r 56b2bcea2529 mercurial/sshserver.py
--- a/mercurial/sshserver.py	Mon Oct 05 22:49:24 2015 -0700
+++ b/mercurial/sshserver.py	Thu Oct 08 12:55:45 2015 -0700
@@ -12,6 +12,7 @@
 import sys
 
 from . import (
+    error,
     hook,
     util,
     wireproto,
@@ -39,7 +40,7 @@
             argline = self.fin.readline()[:-1]
             arg, l = argline.split()
             if arg not in keys:
-                raise util.Abort("unexpected parameter %r" % arg)
+                raise error.Abort("unexpected parameter %r" % arg)
             if arg == '*':
                 star = {}
                 for k in xrange(int(l)):