diff --git a/demos/bernoulli_demo.py b/demos/bernoulli_demo.py
index 2c2d79f633bfd00e370316010d0fdcbd23a0e5cc..458ea26cd52a6cd05d30b70665af061e34325ed4 100644
--- a/demos/bernoulli_demo.py
+++ b/demos/bernoulli_demo.py
@@ -1,3 +1,21 @@
+# 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/>.
+#
+# Copyright(C) 2013-2018 Max-Planck-Society
+#
+# NIFTy is being developed at the Max-Planck-Institut fuer Astrophysik
+# and financially supported by the Studienstiftung des deutschen Volkes.
+
 import nifty5 as ift
 import numpy as np
 
diff --git a/demos/getting_started_1.py b/demos/getting_started_1.py
index fa3e8846978579ae7fcf29f4c70aed87d30b46b8..714b1494e7b6f2428af672ba06c7c6e7f557d24c 100644
--- a/demos/getting_started_1.py
+++ b/demos/getting_started_1.py
@@ -1,3 +1,21 @@
+# 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/>.
+#
+# Copyright(C) 2013-2018 Max-Planck-Society
+#
+# NIFTy is being developed at the Max-Planck-Institut fuer Astrophysik
+# and financially supported by the Studienstiftung des deutschen Volkes.
+
 import nifty5 as ift
 import numpy as np
 
diff --git a/demos/getting_started_2.py b/demos/getting_started_2.py
index 9a2f13ac8db9603243a3874dcfd5ac98a59a6a2c..9955d6d4f291f7f3c2491e32a2bb8f49ea28e86d 100644
--- a/demos/getting_started_2.py
+++ b/demos/getting_started_2.py
@@ -1,3 +1,21 @@
+# 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/>.
+#
+# Copyright(C) 2013-2018 Max-Planck-Society
+#
+# NIFTy is being developed at the Max-Planck-Institut fuer Astrophysik
+# and financially supported by the Studienstiftung des deutschen Volkes.
+
 import nifty5 as ift
 import numpy as np
 
diff --git a/demos/getting_started_3.py b/demos/getting_started_3.py
index 2ecc30574a77cad865698d6c4949e69657d5ae82..551ccdc5b5871ba6a7e009867095bf6597aae288 100644
--- a/demos/getting_started_3.py
+++ b/demos/getting_started_3.py
@@ -1,3 +1,21 @@
+# 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/>.
+#
+# Copyright(C) 2013-2018 Max-Planck-Society
+#
+# NIFTy is being developed at the Max-Planck-Institut fuer Astrophysik
+# and financially supported by the Studienstiftung des deutschen Volkes.
+
 import nifty5 as ift
 import numpy as np