diff --git a/MdeModulePkg/Core/DxeIplPeim/DxeIpl.h b/MdeModulePkg/Core/DxeIplPeim/DxeIpl.h
index 5cda5199c6..498f46947d 100644
--- a/MdeModulePkg/Core/DxeIplPeim/DxeIpl.h
+++ b/MdeModulePkg/Core/DxeIplPeim/DxeIpl.h
@@ -1,5 +1,6 @@
 /** @file
-  Header file for DxeIpl PEIM.
+  Master header file for DxeIpl PEIM. All source files in this module should
+  include this file for common defininitions. 
 
 Copyright (c) 2006 - 2008, Intel Corporation. <BR>
 All rights reserved. This program and the accompanying materials