diff --git a/ui/jquery.ui.button.js b/ui/jquery.ui.button.js
index e8a0935dd..1e1d04097 100644
--- a/ui/jquery.ui.button.js
+++ b/ui/jquery.ui.button.js
@@ -96,6 +96,7 @@ $.widget( "ui.button", {
 			})
 			.bind( "click.button", function( event ) {
 				if ( options.disabled ) {
+					event.preventDefault();
 					event.stopImmediatePropagation();
 				}
 			});