diff --git a/examples/events/EiffelArtifactCreatedEvent/backend.json b/examples/events/EiffelArtifactCreatedEvent/backend.json
index f9b3c4fe..15207901 100644
--- a/examples/events/EiffelArtifactCreatedEvent/backend.json
+++ b/examples/events/EiffelArtifactCreatedEvent/backend.json
@@ -3,8 +3,6 @@
     "type": "EiffelArtifactCreatedEvent",
     "version": "3.0.0",
     "time": 1234567890,
-    "source": {
-    },
     "id": "aaaaaaaa-bbbb-5ccc-8ddd-eeeeeeeeeee0"
   },
   "data": {