diff --git a/EdkModulePkg/Universal/EmuVariable/RuntimeDxe/EmuVariable.c b/EdkModulePkg/Universal/EmuVariable/RuntimeDxe/EmuVariable.c
index acc4121879..8695b7526a 100644
--- a/EdkModulePkg/Universal/EmuVariable/RuntimeDxe/EmuVariable.c
+++ b/EdkModulePkg/Universal/EmuVariable/RuntimeDxe/EmuVariable.c
@@ -826,7 +826,7 @@ Returns:
     return EFI_OUT_OF_RESOURCES;
   }
 
-  EfiInitializeLock(&mVariableModuleGlobal->VariableGlobal[Physical].VariableServicesLock, EFI_TPL_CALLBACK);
+  EfiInitializeLock(&mVariableModuleGlobal->VariableGlobal[Physical].VariableServicesLock, EFI_TPL_NOTIFY);
   
   //
   // Intialize volatile variable store
diff --git a/EdkModulePkg/Universal/Variable/RuntimeDxe/Variable.c b/EdkModulePkg/Universal/Variable/RuntimeDxe/Variable.c
index a3992f7ebd..a9dff65494 100644
--- a/EdkModulePkg/Universal/Variable/RuntimeDxe/Variable.c
+++ b/EdkModulePkg/Universal/Variable/RuntimeDxe/Variable.c
@@ -1320,7 +1320,7 @@ Returns:
     return Status;
   }
 
-  EfiInitializeLock(&mVariableModuleGlobal->VariableGlobal[Physical].VariableServicesLock, EFI_TPL_CALLBACK);
+  EfiInitializeLock(&mVariableModuleGlobal->VariableGlobal[Physical].VariableServicesLock, EFI_TPL_NOTIFY);
   
   //
   // Allocate memory for volatile variable store