diff --git a/source/_posts/2019-09-13-live-blogging-symfonylive-london.md b/source/_posts/2019-09-13-live-blogging-symfonylive-london.md
index 42904217..3b0a1ec2 100644
--- a/source/_posts/2019-09-13-live-blogging-symfonylive-london.md
+++ b/source/_posts/2019-09-13-live-blogging-symfonylive-london.md
@@ -137,3 +137,4 @@ Notifier
 
 * `composer req symfony/messager` - best MessageBus implementation
 * Message -> Message bus -> Message handler
+* Message is a plain PHP class