diff --git a/orochi/templates/website/index.html b/orochi/templates/website/index.html
index 08f644e3..779bc7dc 100644
--- a/orochi/templates/website/index.html
+++ b/orochi/templates/website/index.html
@@ -466,7 +466,7 @@ <h5 class="offcanvas-title" id="leftNoteLabel">History Log</h5>
       }).get();
       var plugin = $(this).data('plugin');
       if (indexes.length == 2) {
-        var url = `diff_view/${indexes[0]}/${indexes[1]}/${plugin}`;
+        var url = `/diff_view/${indexes[0]}/${indexes[1]}/${plugin}`;
         window.open(url, "_blank");
       }
     });