diff --git a/server/src/main/resources/web/drawio.ftl b/server/src/main/resources/web/drawio.ftl
index d95aac00..eecade26 100644
--- a/server/src/main/resources/web/drawio.ftl
+++ b/server/src/main/resources/web/drawio.ftl
@@ -16,7 +16,7 @@
     <#assign finalUrl="${baseUrl}${currentUrl}">
 </#if>
   <script>
-    var url = '${finalUrl}';
+    var url = '${finalUrl?js_string}';
 	var kkagent = '${kkagent}';
     var baseUrl = '${baseUrl}'.endsWith('/') ? '${baseUrl}' : '${baseUrl}' + '/';
     if (kkagent === 'true' || !url.startsWith(baseUrl)) {