diff --git a/web_src/js/index.js b/web_src/js/index.js
index 4169a61d8..1c2ab7b2c 100644
--- a/web_src/js/index.js
+++ b/web_src/js/index.js
@@ -2409,8 +2409,11 @@ $(document).ready(async () => {
       timeout: 18000000,
       previewTemplate,
       init() {
-        this.on('sending', (_file, _xhr, formData) => {
-          formData.append('dataset_id', $dataset.data('dataset-id'));
+        this.on('sending', (file, xhr, _formData) => {
+          const send = xhr.send;
+          xhr.send = function () {
+            send.call(xhr, file);
+          };
         });
         this.on('success', (file, _data) => {
           const uuid = $dataset.data('uuid');