diff --git a/admin-dev/themes/default/template/header.tpl b/admin-dev/themes/default/template/header.tpl
index afc3beedc..426424369 100644
--- a/admin-dev/themes/default/template/header.tpl
+++ b/admin-dev/themes/default/template/header.tpl
@@ -87,9 +87,11 @@
 	<!--[if IE]>
 	<link type="text/css" rel="stylesheet" href="{$base_url}css/admin-ie.css" />
 	<![endif]-->
+	{if isset($brightness)}
 	<style type="text/css">
 		div#header_infos, div#header_infos a#header_shopname, div#header_infos a#header_logout, div#header_infos a#header_foaccess {ldelim}color:{$brightness}{rdelim}
 	</style>
+	{/if}
 </head>
 <body style="{if isset($bo_color) && $bo_color}background:{$bo_color};{/if}{if isset($bo_width) && $bo_width > 0}text-align:center;{/if}">
 {if $display_header}
