diff -r 5313d98089f5 -r 1b90036f42f0 mercurial/hgweb/webcommands.py
--- a/mercurial/hgweb/webcommands.py	Mon May 29 06:06:13 2017 -0700
+++ b/mercurial/hgweb/webcommands.py	Sun May 21 16:57:32 2017 +0900
@@ -1374,7 +1374,7 @@
         subtopic = None
 
     try:
-        doc = helpmod.help_(u, topic, subtopic=subtopic)
+        doc = helpmod.help_(u, commands, topic, subtopic=subtopic)
     except error.UnknownCommand:
         raise ErrorResponse(HTTP_NOT_FOUND)
     return tmpl('help', topic=topicname, doc=doc)