diff --git a/usr.sbin/mixer/mixer.c b/usr.sbin/mixer/mixer.c
index 49b57d84ef1..be48a8ebbf5 100644
--- a/usr.sbin/mixer/mixer.c
+++ b/usr.sbin/mixer/mixer.c
@@ -26,11 +26,11 @@ __FBSDID("$FreeBSD$");
 
 static const char *names[SOUND_MIXER_NRDEVICES] = SOUND_DEVICE_NAMES;
 
-static void	usage(int devmask, int recmask);
+static void	usage(int devmask, int recmask) __dead2;
 static int	res_name(const char *name, int mask);
 static void	print_recsrc(int recsrc, int recmask, int sflag);
 
-static void
+static void __dead2
 usage(int devmask, int recmask)
 {
 	int	i, n;