diff --git a/tool/ansero_example.html b/tool/ansero_example.html
index 9855f19bd2..f2a0870ac8 100644
--- a/tool/ansero_example.html
+++ b/tool/ansero_example.html
@@ -24,8 +24,8 @@ a[onclick] {
       <script>
 
 // read API document
-let apiurl = 'https://(API)/_/ansero.php';
-let favurl = 'https://(API)/_/favicon.php?f=';
+let apiurl = '( API URL )/_/ansero.php';
+let favurl = '( API URL )/_/favicon.php?f=';
 let mylang = 'en-US'; // e.g. 'fr'
 let hide_domain = []; // e.g. ['google.com', 'google.fr']
 let hide_fqdn = []; // e.g. ['en.wikipedia.org']