diff --git a/assets/js/page_image_detail.js b/assets/js/page_image_detail.js
index b81504890e532cae318338b76a643fea2db9adb9..2ab2a686a60a9a497582a2b67cc1eaa614ff14bd 100644
--- a/assets/js/page_image_detail.js
+++ b/assets/js/page_image_detail.js
@@ -33,7 +33,7 @@ const formDataToJson = (data) => {
     for (let key of data.keys()) {
         result[key] = data.getAll(key);
     }
-    return data;
+    return result;
 };
 
 const doSave = () => {