diff --git a/doc/ffserver.conf b/doc/ffserver.conf
index f7db66ed26..cae1a140c9 100644
--- a/doc/ffserver.conf
+++ b/doc/ffserver.conf
@@ -84,7 +84,6 @@ Feed feed1.ffm
 # asf        : ASF compatible streaming (Windows Media Player format).
 # swf        : Macromedia Flash compatible stream
 # avi        : AVI format (MPEG-4 video, MPEG audio sound)
-# master     : special ffmpeg stream used to duplicate a server
 Format mpeg
 
 # Bitrate for the audio stream. Codecs usually support only a few