diff --git a/reactos/lib/secur32/dllmain.c b/reactos/lib/secur32/dllmain.c
index 52197d49442..07e11dca836 100644
--- a/reactos/lib/secur32/dllmain.c
+++ b/reactos/lib/secur32/dllmain.c
@@ -11,7 +11,8 @@
 /* INCLUDES ******************************************************************/
 
 #include <windows.h>
-#include <ntos.h>
+#define NTOS_MODE_USER
+#include <ndk/ntndk.h>
 
 /* GLOBALS *******************************************************************/