diff --git a/sys/dev/smbus/smb.c b/sys/dev/smbus/smb.c
index d02b8a0d4ae6..c4bd042012e1 100644
--- a/sys/dev/smbus/smb.c
+++ b/sys/dev/smbus/smb.c
@@ -131,7 +131,9 @@ smb_probe(device_t dev)
 static int
 smb_attach(device_t dev)
 {
-	cdevsw_add(&smb_cdevsw);
+	make_dev(&smb_cdevsw, device_get_unit(dev),	/* XXX cleanup */
+			UID_ROOT, GID_WHEEL,
+			0600, "smb%d", device_get_unit(dev));
 	return (0);
 }