--- a/tests/test-prune.t	Fri Oct 28 17:11:43 2016 -0700
+++ b/tests/test-prune.t	Fri Oct 28 17:15:57 2016 -0700
@@ -85,7 +85,7 @@
 
   $ hg prune 0
   abort: cannot prune immutable changeset: 1f0dee641bb7
-  (see "hg help phases" for details)
+  (see 'hg help phases' for details)
   [255]
   $ hg debugobsolete
   9d206ffc875e1bc304590549be293be36821e66c 0 {47d2a3944de8b013de3be9578e8e344ea2e6c097} (Sat Dec 15 00:00:00 1979 +0000) {'user': 'blah'}