diff --git a/reactos/regtests/shared/regtests.c b/reactos/regtests/shared/regtests.c
index b73ddc5834a..e00376b8ac6 100755
--- a/reactos/regtests/shared/regtests.c
+++ b/reactos/regtests/shared/regtests.c
@@ -7,6 +7,8 @@
  *      06-07-2003  CSH  Created
  */
 #include <windows.h>
+#define NTOS_MODE_USER
+#include <ndk/ntndk.h>
 #include <pseh.h>
 #include "regtests.h"