diff --git a/sys/dev/sound/pcm/sndstat.c b/sys/dev/sound/pcm/sndstat.c
index 5c44771cb64b..77c63f3eb78b 100644
--- a/sys/dev/sound/pcm/sndstat.c
+++ b/sys/dev/sound/pcm/sndstat.c
@@ -340,7 +340,7 @@ sndstat_prepare(struct sbuf *s)
 static int
 sndstat_init(void)
 {
-	mtx_init(&sndstat_lock, "sndstat", NULL, 0);
+	mtx_init(&sndstat_lock, "sndstat", NULL, MTX_DEF);
 	sndstat_dev = make_dev(&sndstat_cdevsw, SND_DEV_STATUS, UID_ROOT, GID_WHEEL, 0444, "sndstat");
 
 	return (sndstat_dev != 0)? 0 : ENXIO;
diff --git a/sys/dev/sound/pcm/sound.c b/sys/dev/sound/pcm/sound.c
index a7a5851a30d4..ecf8b8dac7d8 100644
--- a/sys/dev/sound/pcm/sound.c
+++ b/sys/dev/sound/pcm/sound.c
@@ -96,7 +96,7 @@ snd_mtxcreate(const char *desc, const char *type)
 	m = malloc(sizeof(*m), M_DEVBUF, M_WAITOK | M_ZERO);
 	if (m == NULL)
 		return NULL;
-	mtx_init(m, desc, type, MTX_RECURSE);
+	mtx_init(m, desc, type, MTX_DEF | MTX_RECURSE);
 	return m;
 #else
 	return (void *)0xcafebabe;