diff --git a/config/samples/default.yaml b/config/samples/default.yaml
index ab5c7d3a..27fd0222 100644
--- a/config/samples/default.yaml
+++ b/config/samples/default.yaml
@@ -12,6 +12,7 @@ spec:
   backend:
     type: NATS
     config:
+      eventTypePrefix: "sap.kyma.custom"
       natsStreamStorageType: File
       natsStreamReplicas: 3
       natsStreamMaxSize: 700M