diff --git a/CHANGES.md b/CHANGES.md
index ec4e68c5ba2..2655ea98567 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -10,6 +10,7 @@ Fixed Issues:
 * [#11848](http://dev.ckeditor.com/ticket/11848): Fixed: [`editor.insertElement()`](http://docs.ckeditor.com/#!/api/CKEDITOR.editor-method-insertElement) throwing an exception in IE, when there was no selection in editor.
 * [#11801](http://dev.ckeditor.com/ticket/11801): Fixed: Editor anchors unavailable when linking [Enhanced Image](http://ckeditor.com/addon/image2) widget.
 * [#11626](http://dev.ckeditor.com/ticket/11626): Fixed: [Table Resize](http://ckeditor.com/addon/tableresize) sets invalid width.
+* [#11872](http://dev.ckeditor.com/ticket/11872): Made [`element.addClass()`](http://docs.ckeditor.com/#!/api/CKEDITOR.dom.element-method-addClass) chainable symmetrically to [`element.removeClass()`](http://docs.ckeditor.com/#!/api/CKEDITOR.dom.element-method-removeClass).
 
 Other changes:
 
diff --git a/core/dom/element.js b/core/dom/element.js
index fabcb89319d..a1c2dd0b4a5 100644
--- a/core/dom/element.js
+++ b/core/dom/element.js
@@ -134,6 +134,7 @@ CKEDITOR.tools.extend( CKEDITOR.dom.element.prototype, {
 	 *		element.addClass( 'classB' ); // <div class="classA classB">
 	 *		element.addClass( 'classA' ); // <div class="classA classB">
 	 *
+	 * @chainable
 	 * @param {String} className The name of the class to be added.
 	 */
 	addClass: function( className ) {
@@ -144,6 +145,8 @@ CKEDITOR.tools.extend( CKEDITOR.dom.element.prototype, {
 				c += ' ' + className;
 		}
 		this.$.className = c || className;
+
+		return this;
 	},
 
 	/**