diff --git a/www/common/onlyoffice/inner.js b/www/common/onlyoffice/inner.js
index e9dc03210..fb864f1e5 100644
--- a/www/common/onlyoffice/inner.js
+++ b/www/common/onlyoffice/inner.js
@@ -1436,7 +1436,7 @@ define([
             */
 
             APP.UploadImageFiles = function (files, type, id, jwt, cb) {
-                cb('NO');
+                return void cb();
             };
             APP.AddImage = function(cb1, cb2) {
                 APP.AddImageSuccessCallback = cb1;