diff --git a/xpcu.c b/xpcu.c
index 8e400b2..369fb62 100644
--- a/xpcu.c
+++ b/xpcu.c
@@ -6,6 +6,7 @@
 #include <usb.h>
 #include <errno.h>
 #include <pthread.h>
+#include <stdint.h>
 #include "usb-driver.h"
 #include "xpcu.h"