diff --git a/hitiny/hitiny_aio.c b/hitiny/hitiny_aio.c
index f475b07..6b6a2bd 100644
--- a/hitiny/hitiny_aio.c
+++ b/hitiny/hitiny_aio.c
@@ -1,3 +1,19 @@
+/*
+ * Copyright (C) 2024 Alexander Pankov (pianisteg.mobile@gmail.com)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.
+ */
 #include "hitiny_sys.h"
 #include "hitiny_aio.h"
 #include <errno.h>
diff --git a/hitiny/hitiny_aio.h b/hitiny/hitiny_aio.h
index 7440095..c11e77e 100644
--- a/hitiny/hitiny_aio.h
+++ b/hitiny/hitiny_aio.h
@@ -1,3 +1,19 @@
+/*
+ * Copyright (C) 2024 Alexander Pankov (pianisteg.mobile@gmail.com)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.
+ */
 #ifndef __HITINY_AIO_H__
 #define __HITINY_AIO_H__