diff --git a/packages/file-handling/src/vpu-fileupload.js b/packages/file-handling/src/vpu-fileupload.js
index 60049eaf1c32baf57e8d7c1f94a9b58f1ef644e7..d6ff0917fdcb7b0ae36f9d0203a67529cf8426a5 100644
--- a/packages/file-handling/src/vpu-fileupload.js
+++ b/packages/file-handling/src/vpu-fileupload.js
@@ -123,7 +123,7 @@ class VPUFileUpload extends VPULitElement {
         }
 
         let data =  {
-            filename: file.name,
+            fileName: file.name,
             status: response.status,
             json: {"hydra:description": ""}
         };
@@ -144,7 +144,8 @@ class VPUFileUpload extends VPULitElement {
 
     sendStartEvent(file) {
         let data =  {
-            filename: file.name,
+            fileName: file.name,
+            fileSize: file.size,
         };
 
         this.dispatchEvent(new CustomEvent("vpu-fileupload-file-start",