diff --git a/sys/isa/syscons_isa.c b/sys/isa/syscons_isa.c
--- a/sys/isa/syscons_isa.c
+++ b/sys/isa/syscons_isa.c
@@ -97,7 +97,7 @@
 sc_max_unit(void)
 {
 
-	return (devclass_get_maxunit(sc_devclass));
+	return (devclass_get_maxunit(devclass_find("sc")));
 }
 
 sc_softc_t
@@ -111,7 +111,8 @@
 		/* FIXME: clear if it is wired to another unit! */
 		sc = &main_softc;
 	} else {
-	        sc = device_get_softc(devclass_get_device(sc_devclass, unit));
+	        sc = device_get_softc(devclass_get_device(devclass_find("sc"),
+		    unit));
 		if (sc == NULL)
 			return (NULL);
 	}
@@ -127,6 +128,7 @@
 sc_softc_t
 *sc_find_softc(struct video_adapter *adp, struct keyboard *kbd)
 {
+	devclass_t dc;
 	sc_softc_t *sc;
 	int i;
 	int units;
@@ -135,9 +137,10 @@
 	if ((adp == NULL || adp == sc->adp) &&
 	    (kbd == NULL || kbd == sc->kbd))
 		return (sc);
-	units = devclass_get_maxunit(sc_devclass);
+	dc = devclass_find("sc");
+	units = devclass_get_maxunit(dc);
 	for (i = 0; i < units; ++i) {
-	        sc = device_get_softc(devclass_get_device(sc_devclass, i));
+	        sc = device_get_softc(devclass_get_device(dc, i));
 		if (sc == NULL)
 			continue;
 		if ((adp == NULL || adp == sc->adp) &&