diff --git a/OMADA_respondd.yaml.example b/OMADA_respondd.yaml.example
index 7dc2563..ef61428 100644
--- a/OMADA_respondd.yaml.example
+++ b/OMADA_respondd.yaml.example
@@ -28,3 +28,4 @@ logging_config:
       - console
       level: DEBUG
     version: 1
+fallback_domain: "omada_respondd_fallback" # optional