--- a/jdk/src/share/classes/javax/swing/ButtonGroup.java	Tue Dec 13 17:30:21 2011 +0400
+++ b/jdk/src/share/classes/javax/swing/ButtonGroup.java	Tue Dec 13 18:38:39 2011 +0400
@@ -65,6 +65,7 @@
  *
  * @author Jeff Dinkins
  */
+@SuppressWarnings("serial")
 public class ButtonGroup implements Serializable {
 
     // the list of buttons participating in this group