diff --git a/src/modules/px4iofirmware/protocol.h b/src/modules/px4iofirmware/protocol.h
index b25a9507f6..bd777428f4 100644
--- a/src/modules/px4iofirmware/protocol.h
+++ b/src/modules/px4iofirmware/protocol.h
@@ -33,7 +33,7 @@
 
 #pragma once
 
-#include <stdint.h>
+#include <inttypes.h>
 
 /**
  * @file protocol.h