diff --git a/defextract.py b/defextract.py
index f477788..6028408 100644
--- a/defextract.py
+++ b/defextract.py
@@ -1,4 +1,21 @@
 #!/usr/bin/env python
+#
+# Copyright (C) 2014  Johannes Schauer <j.schauer@email.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 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; if not, write to the Free Software Foundation, Inc.,
+# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+
 
 # http://aethra-cronicles-remake.googlecode.com/svn-history/r4/trunk/export/sergroj/RSDef.pas
 # vcmi/client/CAnimation.cpp
diff --git a/lodextract.py b/lodextract.py
index 756f3ca..1f6b4e1 100644
--- a/lodextract.py
+++ b/lodextract.py
@@ -1,4 +1,20 @@
 #!/usr/bin/env python
+#
+# Copyright (C) 2014  Johannes Schauer <j.schauer@email.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 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; if not, write to the Free Software Foundation, Inc.,
+# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 
 import zlib
 import struct
diff --git a/makedef.py b/makedef.py
index 0a8a439..b3bf71f 100644
--- a/makedef.py
+++ b/makedef.py
@@ -1,4 +1,20 @@
 #!/usr/bin/env python
+#
+# Copyright (C) 2014  Johannes Schauer <j.schauer@email.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 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; if not, write to the Free Software Foundation, Inc.,
+# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 
 import os
 import struct