diff --git a/DOCS/mplayer.1 b/DOCS/mplayer.1
index 42c7a9f178..ccf55005a6 100644
--- a/DOCS/mplayer.1
+++ b/DOCS/mplayer.1
@@ -231,6 +231,7 @@ for example :
     -ac hwac3      enable Hardware AC3 passthrough
                    (see documentation)
     -ac vorbis     use libvorbis
+    -ac ffmp3      use ffmpeg's MP3 decoder (SLOW)
 .TP
 .B \-vfm <1-5>
 force usage of a specific codec FAMILY, and FALLBACK to default if failed.