diff --git a/PcAtChipsetPkg/PcAtChipsetPkg.dsc b/PcAtChipsetPkg/PcAtChipsetPkg.dsc
index 3d1fb816f5..451e60ddc8 100644
--- a/PcAtChipsetPkg/PcAtChipsetPkg.dsc
+++ b/PcAtChipsetPkg/PcAtChipsetPkg.dsc
@@ -1,7 +1,7 @@
 ## @file
 #  PC/AT Chipset Package
 #
-#  Copyright (c) 2007 - 2019, Intel Corporation. All rights reserved.<BR>
+#  Copyright (c) 2007 - 2021, Intel Corporation. All rights reserved.<BR>
 #  Copyright (c) 2020, AMD Incorporated. All rights reserved.<BR>
 #
 #  SPDX-License-Identifier: BSD-2-Clause-Patent
@@ -18,6 +18,8 @@
   BUILD_TARGETS                  = DEBUG|RELEASE|NOOPT
   SKUID_IDENTIFIER               = DEFAULT
 
+!include MdePkg/MdeLibs.dsc.inc
+
 [LibraryClasses]
   BaseLib|MdePkg/Library/BaseLib/BaseLib.inf
   BaseMemoryLib|MdePkg/Library/BaseMemoryLib/BaseMemoryLib.inf