--- a/src/java.desktop/share/classes/java/awt/Container.java	Tue Sep 24 22:57:28 2019 +0100
+++ b/src/java.desktop/share/classes/java/awt/Container.java	Tue Sep 24 18:25:54 2019 -0700
@@ -3851,6 +3851,7 @@
          * The handler to fire {@code PropertyChange}
          * when children are added or removed
          */
+        @SuppressWarnings("serial") // Not statically typed as Serializable
         protected ContainerListener accessibleContainerHandler = null;
 
         /**