diff --git a/youtube_dl/YoutubeDL.py b/youtube_dl/YoutubeDL.py
index 7e65f305a..015d29708 100755
--- a/youtube_dl/YoutubeDL.py
+++ b/youtube_dl/YoutubeDL.py
@@ -251,7 +251,7 @@ class YoutubeDL(object):
     call_home:         Boolean, true iff we are allowed to contact the
                        youtube-dl servers for debugging.
     sleep_interval:    Number of seconds to sleep before each download.
-    max_sleep_interval Upper bound of number of seconds for random sleep.
+    max_sleep_interval:Upper bound of number of seconds for random sleep.
     listformats:       Print an overview of available video formats and exit.
     list_thumbnails:   Print a table of all thumbnails and exit.
     match_filter:      A function that gets called with the info_dict of