diff --git a/OvmfPkg/Csm/Include/Guid/LegacyDevOrder.h b/OvmfPkg/Csm/Include/Guid/LegacyDevOrder.h
deleted file mode 100644
index 4446b005cb..0000000000
--- a/OvmfPkg/Csm/Include/Guid/LegacyDevOrder.h
+++ /dev/null
@@ -1,39 +0,0 @@
-/** @file
-  Guid of a NV Variable which store the information about the
-  FD/HD/CD/NET/BEV order.
-
-Copyright (c) 2011 - 2018, Intel Corporation. All rights reserved.<BR>
-SPDX-License-Identifier: BSD-2-Clause-Patent
-
-**/
-
-#ifndef __LEGACY_DEV_ORDER_VARIABLE_GUID_H__
-#define __LEGACY_DEV_ORDER_VARIABLE_GUID_H__
-
-///
-/// Name and Guid of a NV Variable which stores the information about the
-/// FD/HD/CD/NET/BEV order
-///
-#define EFI_LEGACY_DEV_ORDER_VARIABLE_GUID \
-  { \
-  0xa56074db, 0x65fe, 0x45f7, {0xbd, 0x21, 0x2d, 0x2b, 0xdd, 0x8e, 0x96, 0x52} \
-  }
-
-typedef UINT8 BBS_TYPE;
-
-#pragma pack(1)
-typedef struct {
-  BBS_TYPE    BbsType;
-  ///
-  /// Length = sizeof (UINT16) + sizeof (Data)
-  ///
-  UINT16      Length;
-  UINT16      Data[1];
-} LEGACY_DEV_ORDER_ENTRY;
-#pragma pack()
-
-#define VAR_LEGACY_DEV_ORDER  L"LegacyDevOrder"
-
-extern EFI_GUID  gEfiLegacyDevOrderVariableGuid;
-
-#endif
diff --git a/OvmfPkg/OvmfPkg.dec b/OvmfPkg/OvmfPkg.dec
index 74cc870cbe..19149dc9fe 100644
--- a/OvmfPkg/OvmfPkg.dec
+++ b/OvmfPkg/OvmfPkg.dec
@@ -156,7 +156,6 @@
   gRootBridgesConnectedEventGroupGuid   = {0x24a2d66f, 0xeedd, 0x4086, {0x90, 0x42, 0xf2, 0x6e, 0x47, 0x97, 0xee, 0x69}}
   gMicrosoftVendorGuid                  = {0x77fa9abd, 0x0359, 0x4d32, {0xbd, 0x60, 0x28, 0xf4, 0xe7, 0x8f, 0x78, 0x4b}}
   gEfiLegacyBiosGuid                    = {0x2E3044AC, 0x879F, 0x490F, {0x97, 0x60, 0xBB, 0xDF, 0xAF, 0x69, 0x5F, 0x50}}
-  gEfiLegacyDevOrderVariableGuid        = {0xa56074db, 0x65fe, 0x45f7, {0xbd, 0x21, 0x2d, 0x2b, 0xdd, 0x8e, 0x96, 0x52}}
   gQemuKernelLoaderFsMediaGuid          = {0x1428f772, 0xb64a, 0x441e, {0xb8, 0xc3, 0x9e, 0xbd, 0xd7, 0xf8, 0x93, 0xc7}}
   gGrubFileGuid                         = {0xb5ae312c, 0xbc8a, 0x43b1, {0x9c, 0x62, 0xeb, 0xb8, 0x26, 0xdd, 0x5d, 0x07}}
   gConfidentialComputingSecretGuid      = {0xadf956ad, 0xe98c, 0x484c, {0xae, 0x11, 0xb5, 0x1c, 0x7d, 0x33, 0x64, 0x47}}