diff --git a/MdeModulePkg/Universal/PcatRealTimeClockRuntimeDxe/PcRtc.c b/MdeModulePkg/Universal/PcatRealTimeClockRuntimeDxe/PcRtc.c
index 18ed9f006d..88faa0e654 100644
--- a/MdeModulePkg/Universal/PcatRealTimeClockRuntimeDxe/PcRtc.c
+++ b/MdeModulePkg/Universal/PcatRealTimeClockRuntimeDxe/PcRtc.c
@@ -143,7 +143,7 @@ PcRtcInit (
   //
   Status = RtcWaitToUpdate (PcdGet32 (PcdRealTimeClockUpdateTimeout));
   if (EFI_ERROR (Status)) {
-  	//BugBug: the EfiAtRuntime should be encapsulated in EfiAcquireLock or
+    //BugBug: the EfiAtRuntime should be encapsulated in EfiAcquireLock or
     //        provide a new instance for EfiAcquireLock, say, RtEfiAcquireLock
     if (!EfiAtRuntime ()) {
       EfiReleaseLock (&Global->RtcLock);
diff --git a/MdeModulePkg/Universal/Variable/Pei/Variable.c b/MdeModulePkg/Universal/Variable/Pei/Variable.c
index a8132d6eaa..d778fde073 100644
--- a/MdeModulePkg/Universal/Variable/Pei/Variable.c
+++ b/MdeModulePkg/Universal/Variable/Pei/Variable.c
@@ -367,7 +367,7 @@ FindVariable (
   UINT32                  Count;
   UINT8                   *VariableBase;
 
-  if (VariableName != 0 && VendorGuid == NULL) {
+  if (VariableName != NULL && VendorGuid == NULL) {
     return EFI_INVALID_PARAMETER;
   }
   //