Index: uspace/lib/usb/Makefile
===================================================================
--- uspace/lib/usb/Makefile	(revision e8f826b3c79eec54dedbbc97e3d25b05e5c2c8a2)
+++ uspace/lib/usb/Makefile	(revision 190c9438db0ced7a6a01a3e1100d2ceb8e18edbe)
@@ -31,4 +31,5 @@
 EXTRA_CFLAGS += \
 	-I$(LIBDRV_PREFIX)/include \
+	-I$(LIBUSBDEV_PREFIX)/include \
 	-Iinclude