diff --git a/check_input.cpp b/check_input.cpp
index 891637d..9083623 100644
--- a/check_input.cpp
+++ b/check_input.cpp
@@ -1,4 +1,5 @@
 #include <iostream>
+#include <cstdint>
 #include "includes/easysock.h"
 #include "includes/connect_code.hpp"
 #include "includes/server.hpp"