diff --git a/logs/forms.py b/logs/forms.py
index 16e7160d..40bae849 100644
--- a/logs/forms.py
+++ b/logs/forms.py
@@ -1,3 +1,4 @@
+# -*- mode: python; coding: utf-8 -*-
 # Re2o est un logiciel d'administration développé initiallement au rezometz. Il
 # se veut agnostique au réseau considéré, de manière à être installable en
 # quelques clics.
diff --git a/tickets/models.py b/tickets/models.py
index b36c8e2b..470d9375 100644
--- a/tickets/models.py
+++ b/tickets/models.py
@@ -23,6 +23,7 @@
 Ticket model
 """
 
+from __future__ import absolute_import
 
 from django.db import models
 from django.utils.translation import ugettext_lazy as _
diff --git a/tickets/preferences/__init__.py b/tickets/preferences/__init__.py
new file mode 100644
index 00000000..53b6e42e
--- /dev/null
+++ b/tickets/preferences/__init__.py
@@ -0,0 +1,24 @@
+# -*- mode: python; coding: utf-8 -*-
+# Re2o est un logiciel d'administration développé initiallement au rezometz. Il
+# se veut agnostique au réseau considéré, de manière à être installable en
+# quelques clics.
+#
+# Copyright © 2020  Gabriel Détraz
+# Copyright © 2019 Arthur Grisel-Davy 
+#
+# 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.
+"""tickets
+The app in charge of storing all the tickets for the local installation
+"""