diff --git a/addons/mrp/static/tests/mrp_document_kanban_tests.js b/addons/mrp/static/tests/mrp_document_kanban_tests.js
index 15054ef7f68..b539c00f51f 100644
--- a/addons/mrp/static/tests/mrp_document_kanban_tests.js
+++ b/addons/mrp/static/tests/mrp_document_kanban_tests.js
@@ -33,11 +33,12 @@ QUnit.module('MrpDocumentsKanbanView', {
         this.ORIGINAL_CREATE_XHR = fileUploadService.createXhr;
         this.patchDocumentXHR = (mockedXHRs, customSend) => {
             fileUploadService.createXhr = () => {
-                const xhr = {
+                const xhr = new window.EventTarget();
+                Object.assign(xhr, {
                     upload: new window.EventTarget(),
-                    open() { },
+                    open() {},
                     send(data) { customSend && customSend(data); },
-                };
+                });
                 mockedXHRs.push(xhr);
                 return xhr;
             };
diff --git a/addons/web/static/src/core/file_upload/file_upload_service.js b/addons/web/static/src/core/file_upload/file_upload_service.js
index b0209e637a5..e631eda812c 100644
--- a/addons/web/static/src/core/file_upload/file_upload_service.js
+++ b/addons/web/static/src/core/file_upload/file_upload_service.js
@@ -68,13 +68,13 @@ export const fileUploadService = {
                 upload.state = "loading";
             });
             // Load listener
-            xhr.upload.addEventListener("load", async () => {
+            xhr.addEventListener("load", () => {
                 delete uploads[upload.id];
                 upload.state = "loaded";
                 bus.trigger("FILE_UPLOAD_LOADED", { upload });
             });
             // Error listener
-            xhr.upload.addEventListener("error", async () => {
+            xhr.addEventListener("error", async () => {
                 delete uploads[upload.id];
                 upload.state = "error";
                 // Disable this option if you need more explicit error handling.
@@ -87,7 +87,7 @@ export const fileUploadService = {
                 bus.trigger("FILE_UPLOAD_ERROR", { upload });
             });
             // Abort listener, considered as error
-            xhr.upload.addEventListener("abort", async () => {
+            xhr.addEventListener("abort", async () => {
                 delete uploads[upload.id];
                 upload.state = "abort";
                 bus.trigger("FILE_UPLOAD_ERROR", { upload });
diff --git a/addons/web/static/tests/core/file_upload_tests.js b/addons/web/static/tests/core/file_upload_tests.js
index 4aea710b1b8..443330cf161 100644
--- a/addons/web/static/tests/core/file_upload_tests.js
+++ b/addons/web/static/tests/core/file_upload_tests.js
@@ -49,13 +49,12 @@ QUnit.module("Components", ({ beforeEach }) => {
         patchUpload = (customSend) => {
             patchWithCleanup(fileUploadService, {
                 createXhr() {
-                    const xhr = {
+                    const xhr = new window.EventTarget();
+                    Object.assign(xhr, {
                         upload: new window.EventTarget(),
                         open() {},
-                        send(data) {
-                            customSend && customSend(data);
-                        },
-                    };
+                        send(data) { customSend && customSend(data); },
+                    });
                     return xhr;
                 },
             });
@@ -92,7 +91,7 @@ QUnit.module("Components", ({ beforeEach }) => {
         const fileUploadService = env.services.file_upload;
         fileUploadService.upload("/test/", []);
         await nextTick();
-        fileUploadService.uploads[1].xhr.upload.dispatchEvent(new Event("load"));
+        fileUploadService.uploads[1].xhr.dispatchEvent(new Event("load"));
         await nextTick();
         assert.containsNone(target, ".file_upload");
     });
@@ -104,7 +103,7 @@ QUnit.module("Components", ({ beforeEach }) => {
         const fileUploadService = env.services.file_upload;
         fileUploadService.upload("/test/", []);
         await nextTick();
-        fileUploadService.uploads[1].xhr.upload.dispatchEvent(new Event("error"));
+        fileUploadService.uploads[1].xhr.dispatchEvent(new Event("error"));
         await nextTick();
         assert.containsNone(target, ".file_upload");
     });
@@ -116,7 +115,7 @@ QUnit.module("Components", ({ beforeEach }) => {
         const fileUploadService = env.services.file_upload;
         fileUploadService.upload("/test/", []);
         await nextTick();
-        fileUploadService.uploads[1].xhr.upload.dispatchEvent(new Event("abort"));
+        fileUploadService.uploads[1].xhr.dispatchEvent(new Event("abort"));
         await nextTick();
         assert.containsNone(target, ".file_upload");
     });
@@ -130,7 +129,7 @@ QUnit.module("Components", ({ beforeEach }) => {
         await nextTick();
         patchWithCleanup(env.services.dialog, {
             add: () => {
-                fileUploadService.uploads[1].xhr.upload.dispatchEvent(new Event("abort"));
+                fileUploadService.uploads[1].xhr.dispatchEvent(new Event("abort"));
             },
         });
         await click(target, ".o-file-upload-progress-bar-abort", true);