diff --git a/www/tip4japanese.html b/www/tip4japanese.html
index ad1b926fad..10153ee69b 100644
--- a/www/tip4japanese.html
+++ b/www/tip4japanese.html
@@ -32,8 +32,11 @@
     <script>
     function switchLang(lang)
     {
-        document.cookie = "lang=" + lang;
-        location.href   = window.location.protocol+"//"+window.location.host;
+        pathName = location.pathname;
+        pathName = pathName.substring(0, pathName.lastIndexOf ('/') + 1);
+
+        document.cookie = "lang=" + lang + "; path=" + pathName;
+        location.href   = window.location.protocol + "//" + window.location.host + pathName;
     }
     </script>
   </body>