diff --git a/spectrum_manager/src/APIServer.h b/spectrum_manager/src/APIServer.h
index 3907beea8fc7e08c21f8fcae365f7b4f3167595d..cb9aff4aed9a6258d3357061e8344646175e5a8c 100644
--- a/spectrum_manager/src/APIServer.h
+++ b/spectrum_manager/src/APIServer.h
@@ -56,6 +56,7 @@ class APIServer {
 		void serve_instances_start(Server *server, Server::session *sess, struct mg_connection *conn, struct http_message *hm);
 		void serve_instances_stop(Server *server, Server::session *sess, struct mg_connection *conn, struct http_message *hm);
 		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 send_json(struct mg_connection *conn, const Document &d);
 		void send_ack(struct mg_connection *conn, bool error, const std::string &message);