src/share/classes/com/sun/java/swing/plaf/motif/MotifLookAndFeel.java

@@ -58,10 +58,11 @@
  * version of Swing.  A future release of Swing will provide support for
  * long term persistence.
  *
  * @author unattributed
  */
+@SuppressWarnings("serial") // Superclass is not serializable across versions
 public class MotifLookAndFeel extends BasicLookAndFeel
 {
     public String getName() {
         return "CDE/Motif";
     }