diff --git a/README.md b/README.md
index a9990cc..8e0a5b7 100644
--- a/README.md
+++ b/README.md
@@ -40,4 +40,5 @@ logging_config:
       - console
       level: DEBUG
     version: 1
+fallback_domain: "unifi_respondd_fallback"  # optional
 ```
diff --git a/unifi_respondd.yaml.example b/unifi_respondd.yaml.example
index 9fbd069..48dd1dd 100644
--- a/unifi_respondd.yaml.example
+++ b/unifi_respondd.yaml.example
@@ -28,4 +28,5 @@ logging_config:
       handlers:
       - console
       level: DEBUG
-    version: 1
\ No newline at end of file
+    version: 1
+fallback_domain: "unifi_respondd_fallback"  # optional
diff --git a/unifi_respondd/config.py b/unifi_respondd/config.py
index f93cc3f..a53396e 100644
--- a/unifi_respondd/config.py
+++ b/unifi_respondd/config.py
@@ -73,6 +73,7 @@ def from_dict(cls, cfg: Dict[str, str]) -> "Config":
             unicast_port=cfg["unicast_port"],
             interface=cfg["interface"],
             verbose=cfg["verbose"],
+            fallback_domain=cfg.get("fallback_domain", None),
         )
 
 
diff --git a/unifi_respondd/unifi_client.py b/unifi_respondd/unifi_client.py
index 143a874..431a7e8 100644
--- a/unifi_respondd/unifi_client.py
+++ b/unifi_respondd/unifi_client.py
@@ -221,9 +221,7 @@ def get_infos():
                             gateway6=offloader.get("gateway6", None),
                             gateway_nexthop=offloader_id,
                             neighbour_macs=neighbour_macs,
-                            domain_code=offloader.get(
-                                "domain", "ffmuc_unifi_respondd_fallback"
-                            ),
+                            domain_code=offloader.get("domain", cfg.fallback_domain),
                         )
                     )
     return aps