--- a/tests/test-amend.t	Tue Feb 28 17:08:14 2017 +0100
+++ b/tests/test-amend.t	Tue Feb 28 17:11:51 2017 +0100
@@ -107,7 +107,7 @@
   $ HGUSER=
   $ hg amend -e --config ui.username= -m "empty user"
   abort: no username supplied
-  (use 'hg config --edit' to set your username)
+  (use "hg config --edit" to set your username)
   [255]
   $ hg sum
   parent: 8:* tip (glob)