diff --git a/ui/jquery.ui.button.js b/ui/jquery.ui.button.js
index 482cdc24cf3..65f6c0d6112 100644
--- a/ui/jquery.ui.button.js
+++ b/ui/jquery.ui.button.js
@@ -24,7 +24,7 @@ var lastActive, startXPos, startYPos, clickDragged,
 		}, 1 );
 	},
 	radioGroup = function( radio ) {
-		var name = radio.name,
+		var name = radio.name.replace(/([[\]:'])/g,"\\$1"),
 			form = radio.form,
 			radios = $( [] );
 		if ( name ) {