diff --git a/UefiCpuPkg/CpuDxe/CpuDxe.c b/UefiCpuPkg/CpuDxe/CpuDxe.c
index daf97bd4a6..78b2c88095 100644
--- a/UefiCpuPkg/CpuDxe/CpuDxe.c
+++ b/UefiCpuPkg/CpuDxe/CpuDxe.c
@@ -1,7 +1,7 @@
 /** @file
   CPU DXE Module.
 
-  Copyright (c) 2008 - 2013, Intel Corporation. All rights reserved.<BR>
+  Copyright (c) 2008 - 2016, 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
@@ -422,7 +422,7 @@ CpuSetMemoryAttributes (
       MpStatus = MpService->StartupAllAPs (
                               MpService,          // This
                               SetMtrrsFromBuffer, // Procedure
-                              TRUE,               // SingleThread
+                              FALSE,              // SingleThread
                               NULL,               // WaitEvent
                               0,                  // TimeoutInMicrosecsond
                               &MtrrSettings,      // ProcedureArgument