diff --git a/sys/dev/audio/audio.c b/sys/dev/audio/audio.c
index 7aa1a2015bab..04c8b5999977 100644
--- a/sys/dev/audio/audio.c
+++ b/sys/dev/audio/audio.c
@@ -1366,10 +1366,12 @@ audiodetach(device_t self, int flags)
 	 */
 	maj = cdevsw_lookup_major(&audio_cdevsw);
 	mn = device_unit(self);
-	vdevgone(maj, mn|SOUND_DEVICE, mn|SOUND_DEVICE, VCHR);
-	vdevgone(maj, mn|AUDIO_DEVICE, mn|AUDIO_DEVICE, VCHR);
-	vdevgone(maj, mn|AUDIOCTL_DEVICE, mn|AUDIOCTL_DEVICE, VCHR);
-	vdevgone(maj, mn|MIXER_DEVICE, mn|MIXER_DEVICE, VCHR);
+	if (mn <= 0xf) {
+		vdevgone(maj, mn|SOUND_DEVICE, mn|SOUND_DEVICE, VCHR);
+		vdevgone(maj, mn|AUDIO_DEVICE, mn|AUDIO_DEVICE, VCHR);
+		vdevgone(maj, mn|AUDIOCTL_DEVICE, mn|AUDIOCTL_DEVICE, VCHR);
+		vdevgone(maj, mn|MIXER_DEVICE, mn|MIXER_DEVICE, VCHR);
+	}
 
 	/*
 	 * This waits currently running sysctls to finish if exists.