diff --git a/ariadne/services/comms.py b/ariadne/services/comms.py
index 325b663..5e7d883 100644
--- a/ariadne/services/comms.py
+++ b/ariadne/services/comms.py
@@ -103,7 +103,7 @@ class CommsService:
         return self._client_factory(timeout=settings.comms_timeout_sec)
 
     def _admin_token(self, fallback: str) -> str:
-        token = settings.comms_synapse_admin_token
+        token = getattr(settings, "comms_synapse_admin_token", "")
         return token if token else fallback
 
     def _mas_admin_token(self, client: httpx.Client) -> str: