diff --git a/packages/ckeditor5-ui/src/button/buttonview.js b/packages/ckeditor5-ui/src/button/buttonview.js
index e71a41404cc..744f4a2ee9e 100644
--- a/packages/ckeditor5-ui/src/button/buttonview.js
+++ b/packages/ckeditor5-ui/src/button/buttonview.js
@@ -151,10 +151,6 @@ export default class ButtonView extends View {
 			children: this.children,
 
 			on: {
-				mousedown: bind.to( evt => {
-					evt.preventDefault();
-				} ),
-
 				click: bind.to( evt => {
 					// We can't make the button disabled using the disabled attribute, because it won't be focusable.
 					// Though, shouldn't this condition be moved to the button controller?
diff --git a/packages/ckeditor5-ui/tests/button/buttonview.js b/packages/ckeditor5-ui/tests/button/buttonview.js
index 0b0d219e6d3..1b9db79712d 100644
--- a/packages/ckeditor5-ui/tests/button/buttonview.js
+++ b/packages/ckeditor5-ui/tests/button/buttonview.js
@@ -281,10 +281,10 @@ describe( 'ButtonView', () => {
 		} );
 
 		describe( 'mousedown event', () => {
-			it( 'should be prevented', () => {
+			it( 'should not be prevented', () => {
 				const ret = view.element.dispatchEvent( new Event( 'mousedown', { cancelable: true } ) );
 
-				expect( ret ).to.false;
+				expect( ret ).to.true;
 			} );
 		} );