diff --git a/src/tracker/ws/handler.py b/src/tracker/ws/handler.py
index 8a1ec2e..0ef8a6e 100644
--- a/src/tracker/ws/handler.py
+++ b/src/tracker/ws/handler.py
@@ -242,7 +242,7 @@ async def _authenticate(ws: WebSocket, token: str, on_behalf_of: str | None = No
                 "slug": effective_slug,
                 "lobby_chat_id": str(lobby_chat.id) if lobby_chat else None,
                 "projects": project_list,
-                MemberStatus.ONLINE: manager.online_slugs,
+                "online": manager.online_slugs,
             },
         })