diff --git a/Resources/js/widget/file_upload.js b/Resources/js/widget/file_upload.js
index 3519ab9617033af47c1d5e64050691ed6f45c197..ba876697fbd38e228d24b5992338d75b78435bd2 100644
--- a/Resources/js/widget/file_upload.js
+++ b/Resources/js/widget/file_upload.js
@@ -123,7 +123,9 @@
             }
         )).bind({
             fileuploadfailed: function (e, data) {
-                $.ajax(data.url, { type: 'DELETE' });
+                if(data.url) {
+                    $.ajax(data.url, { type: 'DELETE' });
+                }
             },
             fileuploadadded: updateButtonVisibility,
             fileuploadfinished: updateButtonVisibility,