diff -r f3e090d0c6d6 -r c879fc7bd71f mercurial/configitems.py
--- a/mercurial/configitems.py	Wed Oct 11 04:15:48 2017 +0200
+++ b/mercurial/configitems.py	Wed Oct 11 04:16:05 2017 +0200
@@ -745,6 +745,9 @@
 coreconfigitem('web', 'labels',
     default=list,
 )
+coreconfigitem('web', 'logoimg',
+    default='hglogo.png',
+)
 coreconfigitem('web', 'accesslog',
     default='-',
 )