diff --git a/lib/libmixer/mixer.3 b/lib/libmixer/mixer.3
--- a/lib/libmixer/mixer.3
+++ b/lib/libmixer/mixer.3
@@ -1,5 +1,5 @@
 .\"-
-.\" Copyright (c) 2021 Christos Margiolis <christos@FreeBSD.org>
+.\" Copyright (c) 2021-2022 Christos Margiolis <christos@FreeBSD.org>
 .\"
 .\" Permission is hereby granted, free of charge, to any person obtaining a copy
 .\" of this software and associated documentation files (the "Software"), to deal
@@ -22,7 +22,7 @@
 .\" $FreeBSD$
 .\"
 
-.Dd September 22, 2021
+.Dd March 18, 2022
 .Dt MIXER 3
 .Os
 .Sh NAME
@@ -301,7 +301,7 @@
 or
 .Ar /dev/mixer ,
 .Fn mixer_open
-opens the default mixer (hw.snd.defaul_unit).
+opens the default mixer (hw.snd.default_unit).
 .Pp
 The
 .Fn mixer_close