diff --git a/include/dbus_monitor.hpp b/include/dbus_monitor.hpp
index 8519b5a..764d157 100644
--- a/include/dbus_monitor.hpp
+++ b/include/dbus_monitor.hpp
@@ -109,8 +109,7 @@
     BMCWEB_ROUTE(app, "/subscribe")
         .privileges({{"Login"}})
         .websocket()
-        .onopen([&](crow::websocket::Connection& conn,
-                    const std::shared_ptr<bmcweb::AsyncResp>&) {
+        .onopen([&](crow::websocket::Connection& conn) {
             BMCWEB_LOG_DEBUG << "Connection " << &conn << " opened";
             sessions.try_emplace(&conn);
         })