diff --git a/MdePkg/Library/BaseLib/BaseLib.inf b/MdePkg/Library/BaseLib/BaseLib.inf
index 7fda57c236..db1f3e724b 100644
--- a/MdePkg/Library/BaseLib/BaseLib.inf
+++ b/MdePkg/Library/BaseLib/BaseLib.inf
@@ -171,6 +171,7 @@
   Ia32/WriteMm7.asm | INTEL 
   Ia32/WriteMm6.nasm| INTEL
   Ia32/WriteMm6.asm | INTEL 
+  Ia32/WriteMm5.nasm| INTEL
   Ia32/WriteMm5.asm | INTEL 
   Ia32/WriteMm4.asm | INTEL 
   Ia32/WriteMm3.asm | INTEL 
diff --git a/MdePkg/Library/BaseLib/Ia32/WriteMm5.nasm b/MdePkg/Library/BaseLib/Ia32/WriteMm5.nasm
new file mode 100644
index 0000000000..8733eb31a3
--- /dev/null
+++ b/MdePkg/Library/BaseLib/Ia32/WriteMm5.nasm
@@ -0,0 +1,37 @@
+;------------------------------------------------------------------------------
+;
+; Copyright (c) 2006, Intel Corporation. All rights reserved.<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
+; http://opensource.org/licenses/bsd-license.php.
+;
+; THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+; WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+;
+; Module Name:
+;
+;   WriteMm5.Asm
+;
+; Abstract:
+;
+;   AsmWriteMm5 function
+;
+; Notes:
+;
+;------------------------------------------------------------------------------
+
+    SECTION .text
+
+;------------------------------------------------------------------------------
+; VOID
+; EFIAPI
+; AsmWriteMm5 (
+;   IN UINT64   Value
+;   );
+;------------------------------------------------------------------------------
+global ASM_PFX(AsmWriteMm5)
+ASM_PFX(AsmWriteMm5):
+    movq    mm5, [esp + 4]
+    ret
+