diff --git a/collects/net/scribblings/ftp.scrbl b/collects/net/scribblings/ftp.scrbl
index 8a4c66930a..cf68e0d86b 100644
--- a/collects/net/scribblings/ftp.scrbl
+++ b/collects/net/scribblings/ftp.scrbl
@@ -106,6 +106,7 @@ is intended to limit polling.
 @racketblock[
 (ftp-download-file
  ftp-conn "." "testfile"
+ #:progress
  (lambda (get-count)
    (thread
     (lambda ()