diff --git a/lib/urldata.h b/lib/urldata.h
index c0cf969d11e3038b05f8bba87037faea2709573f..124d95e3bc0e160a5d88a13f6a75d8985bc9425a 100644
--- a/lib/urldata.h
+++ b/lib/urldata.h
@@ -195,7 +195,7 @@ struct Progress {
 
   double current_speed; /* uses the currently fastest transfer */
 
-  int mode;  /* what kind of progress meter to display */
+  bool callback;  /* set when progress callback is used */
   int width; /* screen width at download start */
   int flags; /* see progress.h */
   double timespent;