diff --git a/MdePkg/Library/BaseTimerLibLocalApic/Ipf/IpfTimerLib.c b/MdePkg/Library/BaseTimerLibLocalApic/Ipf/IpfTimerLib.c
index 652cc7e6e4..4214b6226e 100644
--- a/MdePkg/Library/BaseTimerLibLocalApic/Ipf/IpfTimerLib.c
+++ b/MdePkg/Library/BaseTimerLibLocalApic/Ipf/IpfTimerLib.c
@@ -59,7 +59,7 @@ MicroSecondDelay (
 
   Ticks = GetPerformanceCounter ();
   Delay = GetPerformanceCounterProperties (NULL, NULL) * MicroSeconds / 1000000;
-  while (Ticks + Delay < GetPerformanceCounter ());
+  while (Ticks + Delay >= GetPerformanceCounter ());
   return (UINTN)Delay;
 }
 
@@ -84,7 +84,7 @@ NanoSecondDelay (
 
   Ticks = GetPerformanceCounter ();
   Delay = GetPerformanceCounterProperties (NULL, NULL) * NanoSeconds / 1000000000;
-  while (Ticks + Delay < GetPerformanceCounter ());
+  while (Ticks + Delay >= GetPerformanceCounter ());
   return (UINTN)Delay;
 }