diff --git a/DOCS/man/en/mplayer.1 b/DOCS/man/en/mplayer.1
index dc3c61556e..910a4bbef0 100644
--- a/DOCS/man/en/mplayer.1
+++ b/DOCS/man/en/mplayer.1
@@ -5828,8 +5828,8 @@ This can be used to change the aspect ratio with '\-ovc copy'.
 .
 .TP
 .B \-frameno-file <filename> (DEPRECATED)
-Specify the name of the audio file created in the first pass
-of a special three pass audio-only encoding mode.
+Specify the name of the audio file with framenumber mappings created in
+the first (audio only) pass of a special three pass encoding mode.
 .br
 .I NOTE:
 Using this mode will most likely give you A-V desync.