diff --git a/MdePkg/Library/BaseLib/BaseLib.inf b/MdePkg/Library/BaseLib/BaseLib.inf
index 39bdae2744..274abd425b 100644
--- a/MdePkg/Library/BaseLib/BaseLib.inf
+++ b/MdePkg/Library/BaseLib/BaseLib.inf
@@ -201,6 +201,7 @@
   Ia32/WriteDr3.asm | INTEL 
   Ia32/WriteDr2.nasm| INTEL
   Ia32/WriteDr2.asm | INTEL 
+  Ia32/WriteDr1.nasm| INTEL
   Ia32/WriteDr1.asm | INTEL 
   Ia32/WriteDr0.asm | INTEL 
   Ia32/WriteCr4.asm | INTEL 
diff --git a/MdePkg/Library/BaseLib/Ia32/WriteDr1.nasm b/MdePkg/Library/BaseLib/Ia32/WriteDr1.nasm
new file mode 100644
index 0000000000..cd97903784
--- /dev/null
+++ b/MdePkg/Library/BaseLib/Ia32/WriteDr1.nasm
@@ -0,0 +1,38 @@
+;------------------------------------------------------------------------------
+;
+; 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:
+;
+;   WriteDr1.Asm
+;
+; Abstract:
+;
+;   AsmWriteDr1 function
+;
+; Notes:
+;
+;------------------------------------------------------------------------------
+
+    SECTION .text
+
+;------------------------------------------------------------------------------
+; UINTN
+; EFIAPI
+; AsmWriteDr1 (
+;   IN UINTN Value
+;   );
+;------------------------------------------------------------------------------
+global ASM_PFX(AsmWriteDr1)
+ASM_PFX(AsmWriteDr1):
+    mov     eax, [esp + 4]
+    mov     dr1, eax
+    ret
+