diff --git a/youtube_dl/YoutubeDL.py b/youtube_dl/YoutubeDL.py
index 2d769415e..b87ad4edd 100755
--- a/youtube_dl/YoutubeDL.py
+++ b/youtube_dl/YoutubeDL.py
@@ -717,7 +717,7 @@ class YoutubeDL(object):
                 prefix = prefix.replace('../', '').replace('..\\', '')
                 filename = prefix + '.mka'
                 self.to_screen('The Matroska container (.mka) will be used for the download, '
-                  'but the final file will have the .mp3 extension')
+                    'but the final file will have the .mp3 extension')
 
             # Temporary fix for #4787
             # 'Treat' all problem characters by passing filename through preferredencoding