diff --git a/reactos/include/psdk/ntddmmc.h b/reactos/include/psdk/ntddmmc.h
index 2838473cefd..f98368af13f 100644
--- a/reactos/include/psdk/ntddmmc.h
+++ b/reactos/include/psdk/ntddmmc.h
@@ -1,3 +1,8 @@
+/**
+ * This file has no copyright assigned and is placed in the Public Domain.
+ * This file is part of the ReactOS PSDK package.
+ * No warranty is given; refer to the file DISCLAIMER within this package.
+ */
 
 #pragma once