--- a/tests/test-topic-tutorial.t	Sun Oct 01 09:05:42 2017 +0100
+++ b/tests/test-topic-tutorial.t	Sun Oct 01 09:10:48 2017 +0100
@@ -714,7 +714,7 @@
   $ echo sickle >> shopping
   $ hg commit -m 'Adding sickle'
   abort: no active topic
-  (set a current topic or use '--config experimental.topic-mode=off' to commit without a topic)
+  (see 'hg help -e topic.topic-mode' for details)
   [255]
 
 Ok, let's clean this up and delve into multiple topics.