Index: uspace/drv/rootvirt/rootvirt.c
===================================================================
--- uspace/drv/rootvirt/rootvirt.c	(revision ab3a851d234d11b8478c46256ec3842b20325b31)
+++ uspace/drv/rootvirt/rootvirt.c	(revision b9eb93fee84439138da39f6dd8bea65a7370d2dc)
@@ -84,5 +84,5 @@
 
 	int rc = child_device_register_wrapper(parent, virt_dev->name,
-	    virt_dev->match_id, 10);
+	    virt_dev->match_id, 10, NULL);
 
 	if (rc == EOK) {