diff -r be238525d240 -r 72f3dd43dd28 src/jdk.jfr/share/classes/jdk/jfr/internal/consumer/AbstractEventStream.java
--- a/src/jdk.jfr/share/classes/jdk/jfr/internal/consumer/AbstractEventStream.java	Thu Nov 28 16:28:53 2019 +0100
+++ b/src/jdk.jfr/share/classes/jdk/jfr/internal/consumer/AbstractEventStream.java	Thu Nov 28 16:38:25 2019 +0100
@@ -48,7 +48,7 @@
  * an event stream.
  */
 abstract class AbstractEventStream implements EventStream {
-    private final static AtomicLong counter = new AtomicLong(1);
+    private final static AtomicLong counter = new AtomicLong(0);
 
     private final Object terminated = new Object();
     private final Runnable flushOperation = () -> dispatcher().runFlushActions();