diff --git a/themes/fledermaus/luasrc/view/themes/fledermaus/header.htm b/themes/fledermaus/luasrc/view/themes/fledermaus/header.htm
index db29affb98..5cc240ef66 100644
--- a/themes/fledermaus/luasrc/view/themes/fledermaus/header.htm
+++ b/themes/fledermaus/luasrc/view/themes/fledermaus/header.htm
@@ -43,7 +43,7 @@ require("luci.http").prepare_content("text/html")
 	<% if node and node.css then %><link rel="stylesheet" type="text/css" href="<%=resource%>/<%=node.css%>" /><% end %>
 	<meta http-equiv="content-type" content="application/xhtml+xml; charset=utf-8" />
 	<meta http-equiv="content-script-type" content="text/javascript" />
-	<title><%= hostname .. ( (node and node.title) and ' - ' .. node.title or '') %> - LuCI</title>
+	<title><%=striptags( hostname .. ( (node and node.title) and ' - ' .. node.title or '')) %> - LuCI</title>
 
 	<!--[if lt IE 7]>
 		<script type="text/javascript">
diff --git a/themes/openwrt-light/luasrc/view/themes/openwrt-light/header.htm b/themes/openwrt-light/luasrc/view/themes/openwrt-light/header.htm
index fe0fa0b33d..0d9d1bd2e5 100644
--- a/themes/openwrt-light/luasrc/view/themes/openwrt-light/header.htm
+++ b/themes/openwrt-light/luasrc/view/themes/openwrt-light/header.htm
@@ -43,7 +43,7 @@ require("luci.http").prepare_content("text/html")
 	<% if node and node.css then %><link rel="stylesheet" type="text/css" href="<%=resource%>/<%=node.css%>" /><% end %>
 	<meta http-equiv="content-type" content="application/xhtml+xml; charset=utf-8" />
 	<meta http-equiv="content-script-type" content="text/javascript" />
-	<title><%= hostname .. ( (node and node.title) and ' - ' .. node.title or '') %> - LuCI</title>
+	<title><%=striptags( hostname .. ( (node and node.title) and ' - ' .. node.title or '')) %> - LuCI</title>
 
 	<!--[if lt IE 7]>
 		<script type="text/javascript">
diff --git a/themes/openwrt.org/luasrc/view/themes/openwrt.org/header.htm b/themes/openwrt.org/luasrc/view/themes/openwrt.org/header.htm
index b3a53c5894..c875e8db04 100644
--- a/themes/openwrt.org/luasrc/view/themes/openwrt.org/header.htm
+++ b/themes/openwrt.org/luasrc/view/themes/openwrt.org/header.htm
@@ -43,7 +43,7 @@ require("luci.http").prepare_content("text/html")
 	<% if node and node.css then %><link rel="stylesheet" type="text/css" href="<%=resource%>/<%=node.css%>" /><% end %>
 	<meta http-equiv="content-type" content="application/xhtml+xml; charset=utf-8" />
 	<meta http-equiv="content-script-type" content="text/javascript" />
-	<title><%= hostname .. ( (node and node.title) and ' - ' .. node.title or '') %> - LuCI</title>
+	<title><%=striptags( hostname .. ( (node and node.title) and ' - ' .. node.title or '')) %> - LuCI</title>
 
 	<!--[if lt IE 7]>
 		<script type="text/javascript">