diff --git a/server/src/main/resources/web/svg.ftl b/server/src/main/resources/web/svg.ftl
index 2ba3da7a..ee4f3fa3 100644
--- a/server/src/main/resources/web/svg.ftl
+++ b/server/src/main/resources/web/svg.ftl
@@ -129,7 +129,7 @@
     let isDragging = false;
     let startX, startY, startTranslateX, startTranslateY;
     let panStartX, panStartY;
-	var url = '${finalUrl}';
+	var url = '${finalUrl?js_string}';
 	var kkagent = '${kkagent}';
     var baseUrl = '${baseUrl}'.endsWith('/') ? '${baseUrl}' : '${baseUrl}' + '/';
     if (kkagent === 'true' || !url.startsWith(baseUrl)) {