diff --git a/reactos/lib/fmifs/format.c b/reactos/lib/fmifs/format.c
index a8b2d28b036..782504f1b4a 100644
--- a/reactos/lib/fmifs/format.c
+++ b/reactos/lib/fmifs/format.c
@@ -12,7 +12,8 @@
 #define UNICODE
 #define _UNICODE
 #include <windows.h>
-#include <ntddk.h>
+#define NTOS_MODE_USER
+#include <ndk/ntndk.h>
 #include <fmifs.h>
 #include <fslib/vfatlib.h>
 #include <string.h>