diff --git a/UefiCpuPkg/Library/MpInitLib/DxeMpLib.c b/UefiCpuPkg/Library/MpInitLib/DxeMpLib.c
index 5e50b4c391..b393244e05 100644
--- a/UefiCpuPkg/Library/MpInitLib/DxeMpLib.c
+++ b/UefiCpuPkg/Library/MpInitLib/DxeMpLib.c
@@ -651,6 +651,7 @@ MpInitLibSwitchBSP (
   EFI_TIMER_ARCH_PROTOCOL      *Timer;
   UINT64                       TimerPeriod;
 
+  TimerPeriod = 0;
   //
   // Locate Timer Arch Protocol
   //