--- a/tests/test-topic.t	Thu Aug 30 21:05:17 2018 +0800
+++ b/tests/test-topic.t	Sat Sep 01 21:45:15 2018 +0200
@@ -696,7 +696,7 @@
      summary:     Add file alpha
   
 No matches because narf is already closed:
-  $ hg log -r 'topic(narf)' -G
+  $ hg log -r 'topic("narf")' -G
 This regexp should match the topic `fran`:
   $ hg log -r 'topic("re:.ra.")' -G
   o  changeset:   9:0469d521db49