diff --git a/web_src/js/features/common-global.js b/web_src/js/features/common-global.js
index eb59bcbe3..a508db39c 100644
--- a/web_src/js/features/common-global.js
+++ b/web_src/js/features/common-global.js
@@ -192,7 +192,8 @@ export function initGlobalDropzone() {
       thumbnailWidth: 480,
       thumbnailHeight: 480,
       init() {
-        this.on('success', (_file, data) => {
+        this.on('success', (file, data) => {
+          file.uuid = data.uuid;
           const input = $(`<input id="${data.uuid}" name="files" type="hidden">`).val(data.uuid);
           $dropzone.find('.files').append(input);
         });
diff --git a/web_src/js/features/repo-legacy.js b/web_src/js/features/repo-legacy.js
index 6cdde6a1e..2bf80d551 100644
--- a/web_src/js/features/repo-legacy.js
+++ b/web_src/js/features/repo-legacy.js
@@ -300,6 +300,7 @@ async function onEditContent(event) {
         thumbnailHeight: 480,
         init() {
           this.on('success', (file, data) => {
+            file.uuid = data.uuid;
             fileUuidDict[file.uuid] = {submitted: false};
             const input = $(`<input id="${data.uuid}" name="files" type="hidden">`).val(data.uuid);
             $dropzone.find('.files').append(input);