--- a/mercurial/configitems.py	Wed Sep 27 14:30:58 2017 -0700
+++ b/mercurial/configitems.py	Wed Sep 27 15:14:59 2017 -0700
@@ -359,6 +359,9 @@
 coreconfigitem('progress', 'disable',
     default=False,
 )
+coreconfigitem('progress', 'estimateinterval',
+    default=60.0,
+)
 coreconfigitem('progress', 'refresh',
     default=0.1,
 )