diff --git a/DOCS/man/en/mplayer.1 b/DOCS/man/en/mplayer.1
index b21daebb40..658b8545c8 100644
--- a/DOCS/man/en/mplayer.1
+++ b/DOCS/man/en/mplayer.1
@@ -549,6 +549,9 @@ FIXME: This needs to be clarified and documented thoroughly.
 .B \-really-quiet
 Display even less output and status messages.
 .TP
+.B \-rtc-device <device>
+Use the specified device for RTC timing.
+.TP
 .B \-shuffle
 Play files in random order.
 .TP