diff --git a/check_links.sh b/check_links.sh
index 3a5259f2c..3a7e70925 100755
--- a/check_links.sh
+++ b/check_links.sh
@@ -1,5 +1,25 @@
+#
+# This file is distributed as part of the MariaDB Corporation MaxScale.  It 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,
+# version 2.
+#
+# 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.
+#
+# Copyright MariaDB Corporation Ab 2015
+#
+
 #!/bin/bash
 
+# Check that all links to Markdown format files point to existing local files
+
 homedir=$(pwd)
 
 for file in $(find . -name '*.md')