diff --git a/build-toolchain b/build-toolchain
index 67e7ba9b..282865a0 100755
--- a/build-toolchain
+++ b/build-toolchain
@@ -1,4 +1,21 @@
 #!/bin/sh
+#
+# Copyright (C) 2016 Wolfgang Wiedmeyer <wolfgit@wiedmeyer.de>
+#
+# 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 3 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.  If not, see <http://www.gnu.org/licenses/>.
+#
+
 set -e
 
 BASEDIR=$(pwd)