--- a/src/jdk.jfr/share/classes/jdk/jfr/Event.java	Tue Oct 30 15:17:58 2018 -0700
+++ b/src/jdk.jfr/share/classes/jdk/jfr/Event.java	Wed Oct 31 02:10:21 2018 +0100
@@ -88,7 +88,7 @@
 @Enabled(true)
 @StackTrace(true)
 @Registered(true)
-abstract public class Event {
+abstract public class Event extends jdk.internal.event.Event {
     /**
      * Sole constructor, for invocation by subclass constructors, typically
      * implicit.