diff --git a/DuetPkg/DuetPkgX64.dsc b/DuetPkg/DuetPkgX64.dsc
index 70b159d..eeae767 100644
--- a/DuetPkg/DuetPkgX64.dsc
+++ b/DuetPkg/DuetPkgX64.dsc
@@ -4,7 +4,7 @@
 #  Developer's UEFI Emulation. DUET provides an EFI/UEFI IA32/X64 environment on legacy BIOS,
 #  to help developing and debugging native EFI/UEFI drivers.
 #
-#  Copyright (c) 2010 - 2012, Intel Corporation. All rights reserved.<BR>
+#  Copyright (c) 2010 - 2013, 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
@@ -104,7 +104,7 @@
   SerialPortLib|MdeModulePkg/Library/BaseSerialPortLib16550/BaseSerialPortLib16550.inf
   MtrrLib|UefiCpuPkg/Library/MtrrLib/MtrrLib.inf
   LockBoxLib|MdeModulePkg/Library/LockBoxNullLib/LockBoxNullLib.inf
-  CpuExceptionHandlerLib|MdeModulePkg/Library/CpuExceptionHandlerLibNull/CpuExceptionHandlerLibNull.inf
+  CpuExceptionHandlerLib|UefiCpuPkg/Library/CpuExceptionHandlerLib/DxeCpuExceptionHandlerLib.inf
   LocalApicLib|UefiCpuPkg/Library/BaseXApicLib/BaseXApicLib.inf
 
   #