--- a/src/java.desktop/share/classes/java/awt/Window.java	Mon Sep 23 17:18:03 2019 +0100
+++ b/src/java.desktop/share/classes/java/awt/Window.java	Wed Sep 25 13:40:36 2019 +0530
@@ -372,6 +372,7 @@
      * @see #setShape(Shape)
      * @since 1.7
      */
+    @SuppressWarnings("serial") // Not statically typed as Serializable
     private Shape shape = null;
 
     private static final String base = "win";