diff --git a/include/desfire_crypto/DesfireCrypto.h b/include/desfire_crypto/DesfireCrypto.h
index 818976c..5b2934c 100644
--- a/include/desfire_crypto/DesfireCrypto.h
+++ b/include/desfire_crypto/DesfireCrypto.h
@@ -1,5 +1,7 @@
 #pragma once
 
+#include <cstdint>
+
 #include "../aes/AES.h"
 
 using namespace std;