diff --git a/scripts/server-backend.js b/scripts/server-backend.js
index e01a013..66ae122 100644
--- a/scripts/server-backend.js
+++ b/scripts/server-backend.js
@@ -26,7 +26,6 @@ function startBackendServer(port) {
     console.log("Webserver & socketserver running on port:" + port);
 
     const { accessToken, enableWebdav } = config.backend;
-    const { imageDownloadFormat } = config.frontend;
 
     app.get("/api/loadwhiteboard", function (req, res) {
         var wid = req["query"]["wid"];
@@ -92,7 +91,7 @@ function startBackendServer(port) {
 
         var name = fields["name"] || "";
         var date = fields["date"] || +new Date();
-        var filename = whiteboardId + "_" + date + "." + imageDownloadFormat;
+        var filename = whiteboardId + "_" + date + ".png";
         var webdavaccess = fields["webdavaccess"] || false;
         try {
             webdavaccess = JSON.parse(webdavaccess);