diff --git a/hobo/multitenant/settings.py b/hobo/multitenant/settings.py
index d20fd04..c138077 100644
--- a/hobo/multitenant/settings.py
+++ b/hobo/multitenant/settings.py
@@ -1,4 +1,19 @@
-import hashlib
+# hobo - portal to configure and deploy applications
+# Copyright (C) 2015-2016 Entr'ouvert
+#
+# This program is free software: you can redistribute it and/or modify it
+# under the terms of the GNU Affero 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 Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
 from importlib import import_module
 import threading
 import time