--- esteidutil-0.9.18.orig/src/utility/opensslObj.h
+++ esteidutil-0.9.18/src/utility/opensslObj.h
@@ -8,6 +8,7 @@
 #pragma once
 #include "cardlib/DynamicLibrary.h" //bad ..
 #include "Setup.h"
+#include <stdint.h>
 
 #if HAVE_OPENSSL
 #include <openssl/ssl.h>