From c2ebb094c87f593ce3ffc64d369a24bf1340a727 Mon Sep 17 00:00:00 2001
From: red031000 <rubenru09@aol.com>
Date: Mon, 3 Jul 2023 18:19:55 +0100
Subject: [PATCH] forgot this

---
 tools/nitrogfx/main.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/tools/nitrogfx/main.c b/tools/nitrogfx/main.c
index 34902ffd4a..adc93b8fe6 100644
--- a/tools/nitrogfx/main.c
+++ b/tools/nitrogfx/main.c
@@ -1,5 +1,6 @@
 // Copyright (c) 2015 YamaArashi, 2021-2023 red031000
 
+#include <ctype.h>
 #include <stdio.h>
 #include <string.h>
 #include <stdbool.h>