diff --git a/src/main/common/maths.h b/src/main/common/maths.h
index 19842ebb4..3e24481d4 100644
--- a/src/main/common/maths.h
+++ b/src/main/common/maths.h
@@ -20,6 +20,8 @@
 
 #pragma once
 
+#include <stdint.h>
+
 #ifndef sq
 #define sq(x) ((x)*(x))
 #endif
diff --git a/src/main/vcp_hal/usbd_conf.c b/src/main/vcp_hal/usbd_conf.c
index 2258b1341..6c96763fb 100644
--- a/src/main/vcp_hal/usbd_conf.c
+++ b/src/main/vcp_hal/usbd_conf.c
@@ -46,6 +46,8 @@
   */
 
 /* Includes ------------------------------------------------------------------*/
+#include "common/maths.h"
+
 #include "stm32f7xx_hal.h"
 #include "usbd_core.h"
 #include "usbd_desc.h"