diff --git a/atusb/fw/Makefile b/atusb/fw/Makefile
index 4567230..fbefc43 100644
--- a/atusb/fw/Makefile
+++ b/atusb/fw/Makefile
@@ -29,7 +29,7 @@ OBJS = atusb.o board.o spi.o descr.o ep0.o $(USB_OBJS)
 
 vpath %.c usb/
 
-CFLAGS += -I../fw/include -Iusb
+CFLAGS += -Iinclude -Iusb
 
 # ----- Verbosity control -----------------------------------------------------