diff --git a/src/basic/async.h b/src/basic/async.h
index 9ada32c994..e0bbaa5658 100644
--- a/src/basic/async.h
+++ b/src/basic/async.h
@@ -1,7 +1,13 @@
 /* SPDX-License-Identifier: LGPL-2.1-or-later */
 #pragma once
 
+#include <sys/types.h>
+
+#include "macro.h"
+
 int asynchronous_job(void* (*func)(void *p), void *arg);
 
 int asynchronous_sync(pid_t *ret_pid);
 int asynchronous_close(int fd);
+
+DEFINE_TRIVIAL_CLEANUP_FUNC(int, asynchronous_close);