diff --git a/hgext3rd/progressfile.py b/hgext3rd/progressfile.py
--- a/hgext3rd/progressfile.py
+++ b/hgext3rd/progressfile.py
@@ -101,6 +101,8 @@
         return int(delta / elapsed)
 
 def uisetup(ui):
+    if not ui.config('progress', 'statefile', None):
+        return
     progbar = progbarwithfile(ui)
     class progressfileui(ui.__class__):
         """Redirects _progbar to our version, which always outputs if the config
@@ -109,5 +111,4 @@
         @util.propertycache
         def _progbar(self):
             return progbar
-
     ui.__class__ = progressfileui