diff -r 1fc7b5363871 -r cedbe8723d99 mercurial/hook.py
--- a/mercurial/hook.py	Mon Feb 08 17:34:32 2016 +0100
+++ b/mercurial/hook.py	Fri Feb 12 11:34:04 2016 -0800
@@ -36,7 +36,7 @@
         d = funcname.rfind('.')
         if d == -1:
             raise error.HookLoadError(
-                _('%s hook is invalid ("%s" not in a module)')
+                _('%s hook is invalid: "%s" not in a module')
                 % (hname, funcname))
         modname = funcname[:d]
         oldpaths = sys.path