diff --git a/sys/dev/firewire/firewire.c b/sys/dev/firewire/firewire.c
--- a/sys/dev/firewire/firewire.c
+++ b/sys/dev/firewire/firewire.c
@@ -2368,6 +2368,7 @@
 
 	switch (type) {
 	case MOD_LOAD:
+		firewire_devclass = devclass_create("firewire");
 		fwdev_ehtag = EVENTHANDLER_REGISTER(dev_clone,
 		    fwdev_clone, 0, 1000);
 		break;
@@ -2384,6 +2385,5 @@
 }
 
 
-DRIVER_MODULE(firewire, fwohci, firewire_driver, firewire_devclass,
-    fw_modevent,0);
+DRIVER_MODULE(firewire, fwohci, firewire_driver, fw_modevent, NULL);
 MODULE_VERSION(firewire, 1);