diff --git a/MdeModulePkg/Universal/PCD/Dxe/Pcd.c b/MdeModulePkg/Universal/PCD/Dxe/Pcd.c
index db9594abf8..36261a40dd 100644
--- a/MdeModulePkg/Universal/PCD/Dxe/Pcd.c
+++ b/MdeModulePkg/Universal/PCD/Dxe/Pcd.c
@@ -25,7 +25,7 @@ EFI_GUID *TmpTokenSpaceBuffer[PEI_EXMAPPING_TABLE_SIZE + DXE_EXMAPPING_TABLE_SIZ
 ///
 /// PCD database lock.
 ///
-EFI_LOCK mPcdDatabaseLock = EFI_INITIALIZE_LOCK_VARIABLE(TPL_CALLBACK);
+EFI_LOCK mPcdDatabaseLock = EFI_INITIALIZE_LOCK_VARIABLE(TPL_NOTIFY);
 
 PCD_PROTOCOL mPcdInstance = {
   DxePcdSetSku,