diff --git a/cof/petits_cours_views.py b/cof/petits_cours_views.py
index 8aae6b46..332ec831 100644
--- a/cof/petits_cours_views.py
+++ b/cof/petits_cours_views.py
@@ -1,7 +1,6 @@
 # -*- coding: utf-8 -*-
 
 import json
-from datetime import datetime
 from custommail.shortcuts import render_custom_mail
 
 from django.shortcuts import render, get_object_or_404, redirect
@@ -12,6 +11,7 @@ from django.views.decorators.csrf import csrf_exempt
 from django.conf import settings
 from django.contrib.auth.decorators import login_required
 from django.contrib import messages
+from django.utils import timezone
 
 from .models import CofProfile
 from .petits_cours_models import (
@@ -279,7 +279,7 @@ def _traitement_post(request, demande):
     unlock_tables()
     demande.traitee = True
     demande.traitee_par = request.user
-    demande.processed = datetime.now()
+    demande.processed = timezone.now()
     demande.save()
     return render(request,
                   "cof/traitement_demande_petit_cours_success.html",
diff --git a/kfet/migrations/0001_initial.py b/kfet/migrations/0001_initial.py
index 84d81205..b4627c7b 100644
--- a/kfet/migrations/0001_initial.py
+++ b/kfet/migrations/0001_initial.py
@@ -4,7 +4,7 @@ from __future__ import unicode_literals
 from django.db import models, migrations
 import django.db.models.deletion
 import django.core.validators
-import datetime
+from django.utils import timezone
 
 
 class Migration(migrations.Migration):
@@ -31,7 +31,7 @@ class Migration(migrations.Migration):
             name='AccountNegative',
             fields=[
                 ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
-                ('start', models.DateTimeField(default=datetime.datetime(2016, 8, 2, 10, 22, 1, 569492))),
+                ('start', models.DateTimeField(default=timezone.datetime(2016, 8, 2, 10, 22, 1, 569492, tzinfo=timezone.get_default_timezone()))),
                 ('balance_offset', models.DecimalField(decimal_places=2, max_digits=6)),
                 ('authorized_overdraft', models.DecimalField(decimal_places=2, default=0, max_digits=6)),
                 ('comment', models.CharField(max_length=255, blank=True)),
diff --git a/kfet/migrations/0002_auto_20160802_2139.py b/kfet/migrations/0002_auto_20160802_2139.py
index 0a59de44..2eaa7ea3 100644
--- a/kfet/migrations/0002_auto_20160802_2139.py
+++ b/kfet/migrations/0002_auto_20160802_2139.py
@@ -2,7 +2,7 @@
 from __future__ import unicode_literals
 
 from django.db import models, migrations
-import datetime
+from django.utils import timezone
 
 
 class Migration(migrations.Migration):
@@ -19,6 +19,11 @@ class Migration(migrations.Migration):
         migrations.AlterField(
             model_name='accountnegative',
             name='start',
-            field=models.DateTimeField(default=datetime.datetime(2016, 8, 2, 21, 39, 30, 52279)),
+            field=models.DateTimeField(
+                default=timezone.datetime(
+                    2016, 8, 2, 21, 39, 30, 52279,
+                    tzinfo=timezone.get_default_timezone()
+                )
+            ),
         ),
     ]
diff --git a/kfet/migrations/0003_auto_20160802_2142.py b/kfet/migrations/0003_auto_20160802_2142.py
index 586146de..02333d3b 100644
--- a/kfet/migrations/0003_auto_20160802_2142.py
+++ b/kfet/migrations/0003_auto_20160802_2142.py
@@ -2,7 +2,7 @@
 from __future__ import unicode_literals
 
 from django.db import models, migrations
-import datetime
+from django.utils import timezone
 
 
 class Migration(migrations.Migration):
@@ -15,6 +15,6 @@ class Migration(migrations.Migration):
         migrations.AlterField(
             model_name='accountnegative',
             name='start',
-            field=models.DateTimeField(default=datetime.datetime.now),
+            field=models.DateTimeField(default=timezone.now),
         ),
     ]
diff --git a/kfet/migrations/0020_auto_20160808_0450.py b/kfet/migrations/0020_auto_20160808_0450.py
index 2ecc18ee..c5ab6209 100644
--- a/kfet/migrations/0020_auto_20160808_0450.py
+++ b/kfet/migrations/0020_auto_20160808_0450.py
@@ -2,7 +2,7 @@
 from __future__ import unicode_literals
 
 from django.db import models, migrations
-import datetime
+from django.utils import timezone
 
 
 class Migration(migrations.Migration):
@@ -15,6 +15,9 @@ class Migration(migrations.Migration):
         migrations.AlterField(
             model_name='accountnegative',
             name='start',
-            field=models.DateTimeField(default=datetime.datetime.now, blank=True, null=True),
+            field=models.DateTimeField(
+                default=timezone.now,
+                blank=True, null=True
+            ),
         ),
     ]