diff --git a/src/drivers/Makefile.inc b/src/drivers/Makefile.inc
index 34ae62e..4b63a8f 100644
--- a/src/drivers/Makefile.inc
+++ b/src/drivers/Makefile.inc
@@ -29,6 +29,7 @@
 subdirs-y += realtek
 subdirs-y += sil
 subdirs-y += trident
+subdirs-y += usb
 subdirs-y += ics
 subdirs-y += spi
 subdirs-y += ti