diff --git a/spectrum_manager/src/APIServer.h b/spectrum_manager/src/APIServer.h
index 9971ecd06221dd7dd20482a9870b3e1c9ca0aafc..f81da9c3d67c85c9774efe65c1cb18d4786c2b17 100644
--- a/spectrum_manager/src/APIServer.h
+++ b/spectrum_manager/src/APIServer.h
@@ -58,6 +58,7 @@ class APIServer {
 		void serve_instances_unregister(Server *server, Server::session *sess, struct mg_connection *conn, struct http_message *hm);
 		void serve_instances_register(Server *server, Server::session *sess, struct mg_connection *conn, struct http_message *hm);
 		void serve_instances_register_form(Server *server, Server::session *sess, struct mg_connection *conn, struct http_message *hm);
+		void serve_instances_list_rooms(Server *server, Server::session *sess, struct mg_connection *conn, struct http_message *hm);
 		void serve_instances_join_room(Server *server, Server::session *sess, struct mg_connection *conn, struct http_message *hm);
 		void serve_instances_join_room_form(Server *server, Server::session *sess, struct mg_connection *conn, struct http_message *hm);
 		void serve_users(Server *server, Server::session *sess, struct mg_connection *conn, struct http_message *hm);