diff --git a/CHANGES.md b/CHANGES.md
index 889a107f6e1..49235662df2 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -6,7 +6,8 @@
 New Features:
 
 * [#1338](https://github.com/ckeditor/ckeditor-dev/issues/1338): Keystroke labels are displayed for function keys (like F7, F8).
-* [#933](https://github.com/ckeditor/ckeditor-dev/issues/933): [File Browser](https://ckeditor.com/cke4/addon/filetools) plugin can now upload files using XHR requests. This allows for setting custom HTTP headers using [`config.fileTools_requestHeaders`](http://docs.ckeditor.test/#!/api/CKEDITOR.config-cfg-fileTools_requestHeaders) configuration option.
+* [#933](https://github.com/ckeditor/ckeditor-dev/issues/933): [File Browser](https://ckeditor.com/cke4/addon/filebrowser) plugin can now upload files using XHR requests. This allows for setting custom HTTP headers using [`config.fileTools_requestHeaders`](http://docs.ckeditor.test/#!/api/CKEDITOR.config-cfg-fileTools_requestHeaders) configuration option.
+* [#1365](https://github.com/ckeditor/ckeditor-dev/issues/1365): [File Browser](https://ckeditor.com/cke4/addon/filebrowser) plugin uses XHR requests by default.
 * [#1399](https://github.com/ckeditor/ckeditor-dev/issues/1399): Added possibility to set [`CKEDITOR.config.startupFocus`](https://docs.ckeditor.com/ckeditor4/docs/#!/api/CKEDITOR.config-cfg-startupFocus) as `start` or `end` to specify where editor focus should be after initialization.
 * [#1441](https://github.com/ckeditor/ckeditor-dev/issues/1441): [Magic Line](https://ckeditor.com/cke4/addon/magicline) line element can now be identified by `data-cke-magic-line="1"` attribute.
 
diff --git a/plugins/filebrowser/plugin.js b/plugins/filebrowser/plugin.js
index bcc4059bc68..93eb7daad17 100644
--- a/plugins/filebrowser/plugin.js
+++ b/plugins/filebrowser/plugin.js
@@ -311,7 +311,7 @@
 
 						if ( uploadFile.call( sender, evt ) ) {
 							// Use one of two upload strategies, either form or XHR based (#643).
-							if ( editor.config.filebrowserUploadMethod !== 'xhr' || !isFileUploadApiSupported ) {
+							if ( editor.config.filebrowserUploadMethod === 'form' || !isFileUploadApiSupported ) {
 								// Append token preventing CSRF attacks.
 								appendToken( fileInput );
 								return true;
@@ -604,21 +604,19 @@
  *
  * Available values:
  *
- *	* `'xhr'` - XMLHttpRequest is used to upload file. Using this option allows to set up with Additional XHR headers with
+ *	* `'xhr'` - XMLHttpRequest is used to upload file. Using this option allows to set up with additional XHR headers with
  * {@link CKEDITOR.config#fileTools_requestHeaders} option.
- *	* `'form'` - (default) File is uploaded by submitting a traditional `<form>` element.
- *	* `null` - The default method is used.
+ *	* `'form'` - File is uploaded by submitting a traditional `<form>` element. _Note: That was the only option available until CKEditor 4.9.0._
  *
  * Note: please be aware that `'xhr'` requires the [File Tools](https://ckeditor.com/cke4/addon/filetools) plugin to work
  * properly. Without the plugin or using a browser that does not support
  * {@link CKEDITOR.fileTools#isFileUploadSupported file uploading}, will fallback to the `'form'` method despite configuration
  * option.
  *
- *		// Modern browsers will use XMLHttpRequest to upload files.
- *		// IE8 and IE9 will use form submit even though the config option is set to 'xhr'.
- *		config.filebrowserUploadMethod = 'xhr';
+ *		// All browsers will use form element with submit method to upload a file.
+ *		config.filebrowserUploadMethod = 'form';
  *
  * @since 4.9.0
- * @cfg {String/null} [filebrowserUploadMethod=null]
+ * @cfg {String} [filebrowserUploadMethod='xhr']
  * @member CKEDITOR.config
  */