diff -r cf08aaaea7f0 -r ac96ff471c9a mercurial/hgweb/server.py
--- a/mercurial/hgweb/server.py	Fri Sep 15 19:21:08 2017 +0200
+++ b/mercurial/hgweb/server.py	Fri Jun 30 03:45:31 2017 +0200
@@ -282,7 +282,7 @@
             prefix = '/' + prefix.strip('/')
         self.prefix = prefix
 
-        alog = openlog(ui.config('web', 'accesslog', '-'), ui.fout)
+        alog = openlog(ui.config('web', 'accesslog'), ui.fout)
         elog = openlog(ui.config('web', 'errorlog', '-'), ui.ferr)
         self.accesslog = alog
         self.errorlog = elog