diff --git a/test/unit/util.c b/test/unit/util.c
index e3b2f30..870d9e4 100644
--- a/test/unit/util.c
+++ b/test/unit/util.c
@@ -1,3 +1,23 @@
+/*
+ **********************************************************************
+ * Copyright (C) Miroslav Lichvar  2017-2018
+ * 
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of version 2 of the GNU General Public License as
+ * published by the Free Software Foundation.
+ * 
+ * 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; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ * 
+ **********************************************************************
+ */
+
 #include <util.c>
 #include "test.h"