diff --git a/files/nats_registration_listener.py b/files/nats_registration_listener.py
index c547f57..9f03dbf 100644
--- a/files/nats_registration_listener.py
+++ b/files/nats_registration_listener.py
@@ -275,7 +275,7 @@ async def nb_problem(log_status, msg: str):
 
 
 def nb_lookup_device_by_mac(mac: str, log_status) -> Tuple[
-    Optional[str], Optional[int], Optional[int], Optional[str], Optional[Any], Optional[Any], Optional[Any], Optional[Any], Optional[Any]
+    Optional[str], Optional[int], Optional[int], Optional[Any], Optional[Any], Optional[Any], Optional[Any], Optional[Any]
 ]:
     """
     Resolve MAC -> (hostname, iface_id, device_id, action_next, action_last, action_next_timestamp, action_state, sot_ts)
@@ -284,7 +284,7 @@ def nb_lookup_device_by_mac(mac: str, log_status) -> Tuple[
     """
     mac_norm = normalize_mac(mac)
     if not mac_norm:
-        return None, None, None, None, None, None, None, None, None
+        return None, None, None, None, None, None, None, None
 
     # Step 0: short TTL cache (avoid repeated NetBox GETs for chatty devices)
     if NB_LOOKUP_CACHE_TTL > 0:
@@ -314,12 +314,12 @@ def nb_lookup_device_by_mac(mac: str, log_status) -> Tuple[
         data, code = http_get_json(f"{base}/api/dcim/mac-addresses/", params={"mac_address": mac_norm, "limit": "2"}, headers=h)
     if code != 200 or not data:
         asyncio.create_task(nb_problem(log_status, f"[{ts()}] nb: mac query http={code} mac={mac_norm}"))
-        return None, None, None, None, None, None, None, None, None
+        return None, None, None, None, None, None, None, None
 
     results = (data or {}).get("results") or []
     if not results:
         asyncio.create_task(nb_problem(log_status, f"[{ts()}] nb: mac not found mac={mac_norm}"))
-        return None, None, None, None, None, None, None, None, None
+        return None, None, None, None, None, None, None, None
 
     rec = results[0]
     aot = (rec.get("assigned_object_type") or "").strip()
@@ -330,7 +330,7 @@ def nb_lookup_device_by_mac(mac: str, log_status) -> Tuple[
 
     if not aot or aoid is None:
         asyncio.create_task(nb_problem(log_status, f"[{ts()}] nb: mac unassigned mac={mac_norm}"))
-        return None, None, None, None, None, None, None, None, None
+        return None, None, None, None, None, None, None, None
     if aot != "dcim.interface":
         asyncio.create_task(nb_problem(log_status, f"[{ts()}] nb: mac assigned to {aot} mac={mac_norm} iface_id={aoid}"))
         return None, aoid, None, None, None, None, None, None, None
@@ -356,7 +356,7 @@ def nb_lookup_device_by_mac(mac: str, log_status) -> Tuple[
         device, code3 = http_get_json(f"{base}/api/dcim/devices/{dev_id}/", headers=h)
     if code3 != 200 or not device:
         # treat as "no extra info"
-        return host, aoid, dev_id, None, None, None, None, None, None
+        return host, aoid, dev_id, None, None, None, None, None
 
     cf = device.get("custom_fields") or {}
     action_next = cf.get("action_next")