diff --git a/reactos/subsys/system/sm/sm.c b/reactos/subsys/system/sm/sm.c
index 31a6d888b27..1122824592d 100644
--- a/reactos/subsys/system/sm/sm.c
+++ b/reactos/subsys/system/sm/sm.c
@@ -29,8 +29,10 @@
 #include <tchar.h>
 #include "resource.h"
 
+#include <windows.h>
 #define NTOS_MODE_USER
-#include <ntos.h>
+#include <ndk/ntndk.h>
+
 #include <sm/helper.h>
 
 #define SM_CMD(n) cmd_##n