diff -r f87641bf4d23 -r 80e5210df25c tests/test-check-help.t
--- a/tests/test-check-help.t	Wed Feb 07 13:47:03 2018 +0530
+++ b/tests/test-check-help.t	Wed Feb 07 13:49:02 2018 +0530
@@ -12,7 +12,7 @@
   > topics = set()
   > topicre = re.compile(br':hg:`help ([a-z0-9\-.]+)`')
   > for fname in sys.argv:
-  >     with open(fname) as f:
+  >     with open(fname, 'rb') as f:
   >         topics.update(m.group(1) for m in topicre.finditer(f.read()))
   > for s in sorted(topics):
   >     print(s)