--- old/src/java.desktop/share/classes/java/awt/SentEvent.java	2019-09-21 12:30:17.083000000 -0700
+++ new/src/java.desktop/share/classes/java/awt/SentEvent.java	2019-09-21 12:30:16.863000000 -0700
@@ -47,6 +47,7 @@
 
     boolean dispatched;
     private AWTEvent nested;
+    @SuppressWarnings("serial") // Not statically typed as Serializable
     private AppContext toNotify;
 
     SentEvent() {