Index: HelenOS.config
===================================================================
--- HelenOS.config	(revision e29e09cfb15361d4b60d29efbb44487d8500775b)
+++ HelenOS.config	(revision 960ff451cbb6db098022739c83867e340f5fea77)
@@ -549,2 +549,5 @@
 ! [CONFIG_DEBUG=y] CONFIG_TEST_DRIVERS (n/y)
 
+% Start virtual USB host controller
+! CONFIG_RUN_VIRTUAL_USB_HC (n/y)
+
Index: uspace/drv/rootvirt/devices.def
===================================================================
--- uspace/drv/rootvirt/devices.def	(revision e29e09cfb15361d4b60d29efbb44487d8500775b)
+++ uspace/drv/rootvirt/devices.def	(revision 960ff451cbb6db098022739c83867e340f5fea77)
@@ -22,9 +22,9 @@
 },
 #endif
+#ifdef CONFIG_RUN_VIRTUAL_USB_HC
 /* Virtual USB host controller. */
-/*
 {
 	.name = "usbhc",
 	.match_id = "usb&hc=vhc"
 },
-*/
+#endif