diff --git a/MdePkg/Include/IndustryStandard/Acpi61.h b/MdePkg/Include/IndustryStandard/Acpi61.h
index 1cedcc977c..dc3153b7e7 100644
--- a/MdePkg/Include/IndustryStandard/Acpi61.h
+++ b/MdePkg/Include/IndustryStandard/Acpi61.h
@@ -2,6 +2,7 @@
   ACPI 6.1 definitions from the ACPI Specification Revision 6.1 January, 2016.
 
   Copyright (c) 2016, Intel Corporation. All rights reserved.<BR>
+ (C) Copyright 2016 Hewlett Packard Enterprise Development LP<BR>
   This program and the accompanying materials                          
   are licensed and made available under the terms and conditions of the BSD License         
   which accompanies this distribution.  The full text of the license may be found at        
@@ -1475,6 +1476,8 @@ typedef struct {
 //
 // Definition for NVDIMM Control Region Structure
 //
+#define EFI_ACPI_6_1_NFIT_NVDIMM_CONTROL_REGION_VALID_FIELDS_MANUFACTURING           BIT0
+
 #define EFI_ACPI_6_1_NFIT_NVDIMM_CONTROL_REGION_FLAGS_BLOCK_DATA_WINDOWS_BUFFERED    BIT0
 typedef struct {
   UINT16                                      Type;