Index: uspace/lib/usbvirt/Makefile
===================================================================
--- uspace/lib/usbvirt/Makefile	(revision aab02fb0aba3474bbfbd4ecfa9d29b503cb256e3)
+++ uspace/lib/usbvirt/Makefile	(revision 1b22bd45ebc7f42217757e90fa6e5b57f6ed5d1d)
@@ -31,5 +31,5 @@
 
 LIBS = $(LIBUSB_PREFIX)/libusb.a
-EXTRA_CFLAGS = -I$(LIB_PREFIX)
+EXTRA_CFLAGS = -I$(LIBUSB_PREFIX)/include
 
 SOURCES = \