diff --git a/ezgg_website/services/authentication_service.py b/ezgg_website/services/authentication_service.py
index b6dfb4a..01a1c8d 100644
--- a/ezgg_website/services/authentication_service.py
+++ b/ezgg_website/services/authentication_service.py
@@ -15,11 +15,14 @@ This simple authentication service is meant to be dropped into a Rio application
 Instantiate the service, add it to the rio.App attachments and implement the following session hook:
 
 ```
+async def on_session_start(s: rio.Session) -> None:
+    s.authentication_status = AuthenticationStatus(None, None)
+
 authentication_service = FileBasedAuthenticationService("/path/to/pw_file.txt")
 rio.App(
     [...]
     default_attachments=[authentication_service],
-    on_session_start= lambda session: session.authentication_status = AuthenticationStatus(None, None)
+    on_session_start=on_session_start
 )
 ```