diff --git a/ShellPkg/Library/UefiShellNetwork1CommandsLib/Ifconfig.c b/ShellPkg/Library/UefiShellNetwork1CommandsLib/Ifconfig.c
index b4c4233849..7d03b68d91 100644
--- a/ShellPkg/Library/UefiShellNetwork1CommandsLib/Ifconfig.c
+++ b/ShellPkg/Library/UefiShellNetwork1CommandsLib/Ifconfig.c
@@ -1,7 +1,7 @@
 /** @file
   The implementation for ifcommand shell command.
 
-  Copyright (c) 2006 - 2011, Intel Corporation. All rights reserved.<BR>
+  Copyright (c) 2006 - 2012, Intel Corporation. All rights reserved.<BR>
 
   This program and the accompanying materials
   are licensed and made available under the terms and conditions of the BSD License
@@ -1115,7 +1115,7 @@ IfconfigStartIp4(
     mTimeout = FALSE;
     Status  = gBS->CreateEvent (
                     EVT_NOTIFY_SIGNAL | EVT_TIMER,
-                    TPL_CALLBACK - 1,
+                    TPL_CALLBACK,
                     TimeoutToGetMap,
                     NULL,
                     &TimerToGetMap