diff --git a/NetworkPkg/SnpDxe/Snp.c b/NetworkPkg/SnpDxe/Snp.c
index 078b27cf5e..fe022e16ea 100644
--- a/NetworkPkg/SnpDxe/Snp.c
+++ b/NetworkPkg/SnpDxe/Snp.c
@@ -2,6 +2,7 @@
   Implementation of driver entry point and driver binding protocol.
 
 Copyright (c) 2004 - 2019, Intel Corporation. All rights reserved.<BR>
+Copyright (c) Microsoft Corporation.<BR>
 SPDX-License-Identifier: BSD-2-Clause-Patent
 
 **/
@@ -653,7 +654,7 @@ SimpleNetworkDriverStart (
     //
     Status = gBS->CreateEventEx (
                     EVT_NOTIFY_SIGNAL,
-                    TPL_NOTIFY,
+                    TPL_CALLBACK,
                     SnpNotifyExitBootServices,
                     Snp,
                     &gEfiEventExitBootServicesGuid,