diff --git a/tutorial/training/Inc/JPEGDecoder.h b/tutorial/training/Inc/JPEGDecoder.h
index fc961e21..becf01cd 100644
--- a/tutorial/training/Inc/JPEGDecoder.h
+++ b/tutorial/training/Inc/JPEGDecoder.h
@@ -21,6 +21,7 @@
 
 #include "User_Config.h"
 #include <stdio.h>
+#include <cstdint>
 
 #if defined(ESP8266) || defined(ESP32)