diff --git a/PcAtChipsetPkg/PcatRealTimeClockRuntimeDxe/PcRtc.c b/PcAtChipsetPkg/PcatRealTimeClockRuntimeDxe/PcRtc.c
index 292c25def7..b999a2eafe 100644
--- a/PcAtChipsetPkg/PcatRealTimeClockRuntimeDxe/PcRtc.c
+++ b/PcAtChipsetPkg/PcatRealTimeClockRuntimeDxe/PcRtc.c
@@ -141,6 +141,11 @@ PcRtcInit (
   //
   Status = RtcWaitToUpdate (PcdGet32 (PcdRealTimeClockUpdateTimeout));
   if (EFI_ERROR (Status)) {
+    //
+    // Set the variable with default value if the RTC is functioning incorrectly.
+    //
+    Global->SavedTimeZone = EFI_UNSPECIFIED_TIMEZONE;
+    Global->Daylight      = 0;
     if (!EfiAtRuntime ()) {
       EfiReleaseLock (&Global->RtcLock);
     }
diff --git a/PcAtChipsetPkg/PcatRealTimeClockRuntimeDxe/PcRtcEntry.c b/PcAtChipsetPkg/PcatRealTimeClockRuntimeDxe/PcRtcEntry.c
index 16f74b83c9..9cf3988705 100644
--- a/PcAtChipsetPkg/PcatRealTimeClockRuntimeDxe/PcRtcEntry.c
+++ b/PcAtChipsetPkg/PcatRealTimeClockRuntimeDxe/PcRtcEntry.c
@@ -137,9 +137,7 @@ InitializePcRtc (
   EfiInitializeLock (&mModuleGlobal.RtcLock, TPL_CALLBACK);
 
   Status = PcRtcInit (&mModuleGlobal);
-  if (EFI_ERROR (Status)) {
-    return Status;
-  }
+  ASSERT_EFI_ERROR (Status);
 
   gRT->GetTime       = PcRtcEfiGetTime;
   gRT->SetTime       = PcRtcEfiSetTime;