diff --git a/usbdev.c b/usbdev.c
index 764ac04..846ed58 100644
--- a/usbdev.c
+++ b/usbdev.c
@@ -15,6 +15,7 @@
  * GNU General Public License for more details.
  */
 
+#include <inttypes.h>
 #include <stdbool.h>
 #include <string.h>
 #include <libusb.h>