diff --git a/sys/dev/ofw/ofw_firmware.c b/sys/dev/ofw/ofw_firmware.c
index 7d62fc317c1..8723965f74b 100644
--- a/sys/dev/ofw/ofw_firmware.c
+++ b/sys/dev/ofw/ofw_firmware.c
@@ -101,16 +101,21 @@ static int
 ofw_firmware_probe(device_t dev)
 {
 	const char *name, *compat;
+	phandle_t root, parent;
 
 	name = ofw_bus_get_name(dev);
 	if (name == NULL || strcmp(name, "firmware") != 0)
 		return (ENXIO);
+	parent = OF_parent(ofw_bus_get_node(dev));
+	root = OF_finddevice("/");
+	if (parent != root)
+		return (ENXIO);
 	compat = ofw_bus_get_compat(dev);
 	if (compat != NULL)
 		return (ENXIO);
 
 	device_set_desc(dev, "OFW Firmware Group");
-	return (0);
+	return (BUS_PROBE_GENERIC);
 }
 
 static int