diff --git a/spectrum_manager/src/APIServer.h b/spectrum_manager/src/APIServer.h
index f81da9c3d67c85c9774efe65c1cb18d4786c2b17..4ec495156115e73ca9a284e803a9795a06b4239e 100644
--- a/spectrum_manager/src/APIServer.h
+++ b/spectrum_manager/src/APIServer.h
@@ -61,6 +61,7 @@ class APIServer {
 		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_instances_leave_room(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);
 		void serve_users_add(Server *server, Server::session *sess, struct mg_connection *conn, struct http_message *hm);
 		void serve_users_remove(Server *server, Server::session *sess, struct mg_connection *conn, struct http_message *hm);