--- a/mercurial/configitems.py	Tue Jul 18 02:05:19 2017 -0700
+++ b/mercurial/configitems.py	Sat Aug 12 04:47:40 2017 +0530
@@ -361,6 +361,9 @@
 coreconfigitem('progress', 'width',
     default=dynamicdefault,
 )
+coreconfigitem('push', 'pushvars.server',
+    default=False,
+)
 coreconfigitem('server', 'bundle1',
     default=True,
 )