diff --git a/MdePkg/Library/BaseTimerLibLocalApic/x86TimerLib.c b/MdePkg/Library/BaseTimerLibLocalApic/x86TimerLib.c
index b2adc3e140..235fe7be6d 100644
--- a/MdePkg/Library/BaseTimerLibLocalApic/x86TimerLib.c
+++ b/MdePkg/Library/BaseTimerLibLocalApic/x86TimerLib.c
@@ -246,5 +246,5 @@ GetPerformanceCounterProperties (
     *EndValue = 0;
   }
 
-  return PcdGet32(PcdFSBClock);
+  return (UINT64) InternalX86GetTimerFrequency (ApicBase);;
 }