diff --git a/mercurial/configitems.py b/mercurial/configitems.py
--- a/mercurial/configitems.py
+++ b/mercurial/configitems.py
@@ -163,6 +163,9 @@ coreconfigitem('progress', 'clear-comple
 coreconfigitem('progress', 'estimate',
     default=2,
 )
+coreconfigitem('progress', 'width',
+    default=dynamicdefault,
+)
 coreconfigitem('server', 'bundle1',
     default=True,
 )