diff --git a/youtube-dl b/youtube-dl
index 46d45d37d9..633c87e5d1 100755
--- a/youtube-dl
+++ b/youtube-dl
@@ -368,6 +368,7 @@ class YoutubeIE(InfoExtractor):
 				self.to_stderr('WARNING: parsing .netrc: %s' % str(err))
 				return
 
+		# No authentication to be performed
 		if username is None:
 			return