diff --git a/server/src/main/resources/web/ofd.ftl b/server/src/main/resources/web/ofd.ftl
index b23c3332..60f0a640 100644
--- a/server/src/main/resources/web/ofd.ftl
+++ b/server/src/main/resources/web/ofd.ftl
@@ -17,7 +17,7 @@
 <iframe src="" width="100%" frameborder="0"></iframe>
 </body>
 <script type="text/javascript">
-    var url = '${finalUrl}';
+    var url = '${finalUrl?js_string}';
 	var kkagent = '${kkagent}';
     var baseUrl = '${baseUrl}'.endsWith('/') ? '${baseUrl}' : '${baseUrl}' + '/';