diff --git a/doc/ffserver.conf b/doc/ffserver.conf
index c6720908f8..62f169f9d1 100644
--- a/doc/ffserver.conf
+++ b/doc/ffserver.conf
@@ -81,7 +81,7 @@ Feed feed1.ffm
 # jpeg       : Generate a single JPEG image.
 # asf        : ASF compatible streaming (Windows Media Player format).
 # swf        : Macromedia Flash compatible stream
-# avi        : AVI format (OpenDivX video, MPEG audio sound)
+# avi        : AVI format (MPEG-4 video, MPEG audio sound)
 # master     : special ffmpeg stream used to duplicate a server
 Format mpeg