diff --git a/ump_device.cpp b/ump_device.cpp
index cd84be5..ce2aaa7 100644
--- a/ump_device.cpp
+++ b/ump_device.cpp
@@ -60,6 +60,7 @@
 #include "device/usbd.h"
 #include "device/usbd_pvt.h"
 
+#include "tusb.h"
 #include "ump_device.h"
 
 //--------------------------------------------------------------------+