diff --git a/public/index.html b/public/index.html
index 52187ab8..dd127661 100644
--- a/public/index.html
+++ b/public/index.html
@@ -146,6 +146,7 @@
         s.parentNode.insertBefore(hm, s);
       })();
     </script>
+    <!-- ua -->
     <script src="<%= BASE_URL %>script/ua-parser.min.js"></script>
     <script src="<%= BASE_URL %>script/ua.js"></script>
   </head>