diff --git a/sys/dev/mlx/mlx.c b/sys/dev/mlx/mlx.c
--- a/sys/dev/mlx/mlx.c
+++ b/sys/dev/mlx/mlx.c
@@ -980,7 +980,7 @@
 	error = ENOENT;
 	MLX_CONFIG_LOCK(sc);
 	bus_topo_lock();
-	mlxd = (struct mlxd_softc *)devclass_get_softc(mlxd_devclass, *arg);
+	mlxd = devclass_get_softc(devclass_find("mlxd"), *arg);
 	bus_topo_unlock();
 	if ((mlxd != NULL) && (mlxd->mlxd_drive >= sc->mlx_sysdrive) && 
 	    (mlxd->mlxd_drive < (sc->mlx_sysdrive + MLX_MAXDRIVES))) {