--- a/src/mscng/certkeys.c.orig	2018-06-05 18:36:57.000000000 +0200
+++ b/src/mscng/certkeys.c	2018-06-16 16:01:55.988986200 +0200
@@ -14,6 +14,7 @@
  *
  */
 
+#define NTDDI_VERSION 0x06000000
 #include "globals.h"
 
 #include <string.h>