Index: uspace/lib/c/include/ipc/dev_iface.h
===================================================================
--- uspace/lib/c/include/ipc/dev_iface.h	(revision 700af6229bd9b63bccacc969d5e27b85208f191f)
+++ uspace/lib/c/include/ipc/dev_iface.h	(revision 97bfba169985019bcde416012605ad92f42e00fc)
@@ -39,4 +39,6 @@
 	CHAR_DEV_IFACE,
 
+	/** Interface provided by any USB device. */
+	USB_DEV_IFACE,
 	/** Interface provided by USB host controller. */
 	USBHC_DEV_IFACE,