diff --git a/docs/pages/configuration.md b/docs/pages/configuration.md
index df495fe5..df8a31ee 100644
--- a/docs/pages/configuration.md
+++ b/docs/pages/configuration.md
@@ -570,6 +570,7 @@ We can then use this messenger or event bus in event sourcing:
 ```yaml
 patchlevel_event_sourcing:
     event_bus:
+        type: symfony
         service: event.bus
 ```
 Since the event bus was replaced, event sourcing own attributes no longer work.