diff --git a/sys/dev/iicbus/iicbus.h b/sys/dev/iicbus/iicbus.h
index 5afd5fc4a222..503305c77fd7 100644
--- a/sys/dev/iicbus/iicbus.h
+++ b/sys/dev/iicbus/iicbus.h
@@ -77,5 +77,7 @@ void iicbus_init_frequency(device_t dev, u_int bus_freq);
 
 extern driver_t iicbus_driver;
 extern devclass_t iicbus_devclass;
+extern driver_t ofw_iicbus_driver;
+extern devclass_t ofw_iicbus_devclass;
 
 #endif
diff --git a/sys/dev/iicbus/ofw_iicbus.c b/sys/dev/iicbus/ofw_iicbus.c
index bff23ec94051..ffdb87fa419d 100644
--- a/sys/dev/iicbus/ofw_iicbus.c
+++ b/sys/dev/iicbus/ofw_iicbus.c
@@ -76,15 +76,15 @@ struct ofw_iicbus_devinfo {
 	struct ofw_bus_devinfo	opd_obdinfo;
 };
 
-devclass_t ofwiicbus_devclass;
+devclass_t ofw_iicbus_devclass;
 
 DEFINE_CLASS_1(iicbus, ofw_iicbus_driver, ofw_iicbus_methods,
     sizeof(struct iicbus_softc), iicbus_driver);
-EARLY_DRIVER_MODULE(ofw_iicbus, iicbb, ofw_iicbus_driver, ofwiicbus_devclass,
+EARLY_DRIVER_MODULE(ofw_iicbus, iicbb, ofw_iicbus_driver, ofw_iicbus_devclass,
     0, 0, BUS_PASS_BUS);
-EARLY_DRIVER_MODULE(ofw_iicbus, iichb, ofw_iicbus_driver, ofwiicbus_devclass,
+EARLY_DRIVER_MODULE(ofw_iicbus, iichb, ofw_iicbus_driver, ofw_iicbus_devclass,
     0, 0, BUS_PASS_BUS);
-EARLY_DRIVER_MODULE(ofw_iicbus, twsi, ofw_iicbus_driver, ofwiicbus_devclass,
+EARLY_DRIVER_MODULE(ofw_iicbus, twsi, ofw_iicbus_driver, ofw_iicbus_devclass,
     0, 0, BUS_PASS_BUS);
 MODULE_VERSION(ofw_iicbus, 1);
 MODULE_DEPEND(ofw_iicbus, iicbus, 1, 1, 1);