diff --git a/com/migrations/0004_auto_20171023_0929.py b/com/migrations/0004_auto_20171023_0929.py
new file mode 100644
index 00000000..9bd6f55e
--- /dev/null
+++ b/com/migrations/0004_auto_20171023_0929.py
@@ -0,0 +1,43 @@
+# -*- coding: utf-8 -*-
+from __future__ import unicode_literals
+
+from django.db import migrations, models
+import django.utils.timezone
+from django.conf import settings
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('club', '0010_auto_20170912_2028'),
+        migrations.swappable_dependency(settings.AUTH_USER_MODEL),
+        ('com', '0003_auto_20170115_2300'),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='Poster',
+            fields=[
+                ('id', models.AutoField(verbose_name='ID', primary_key=True, serialize=False, auto_created=True)),
+                ('name', models.CharField(verbose_name='name', max_length=128, default='')),
+                ('file', models.ImageField(verbose_name='file', upload_to='com/posters')),
+                ('date_begin', models.DateTimeField(default=django.utils.timezone.now)),
+                ('date_end', models.DateTimeField(blank=True, null=True)),
+                ('is_moderated', models.BooleanField(verbose_name='is moderated', default=False)),
+                ('club', models.ForeignKey(verbose_name='club', related_name='posters', to='club.Club')),
+                ('moderator', models.ForeignKey(verbose_name='moderator', blank=True, null=True, related_name='moderated_posters', to=settings.AUTH_USER_MODEL)),
+            ],
+        ),
+        migrations.CreateModel(
+            name='Screen',
+            fields=[
+                ('id', models.AutoField(verbose_name='ID', primary_key=True, serialize=False, auto_created=True)),
+                ('name', models.CharField(verbose_name='name', max_length=128)),
+            ],
+        ),
+        migrations.AddField(
+            model_name='poster',
+            name='screens',
+            field=models.ManyToManyField(related_name='posters', to='com.Screen'),
+        ),
+    ]
diff --git a/com/models.py b/com/models.py
index bd1f7afe..26844330 100644
--- a/com/models.py
+++ b/com/models.py
@@ -191,7 +191,6 @@ class WeekmailArticle(models.Model):
 
 class Screen(models.Model):
     name = models.CharField(_("name"), max_length=128)
-    club = models.ForeignKey(Club, related_name="screens", verbose_name=_("club"), null=False)
 
     def active_posters(self):
         now = timezone.now()
@@ -206,6 +205,7 @@ class Screen(models.Model):
 class Poster(models.Model):
     name = models.CharField(_("name"), blank=False, null=False, max_length=128, default="")
     file = models.ImageField(_("file"), null=False, upload_to="com/posters")
+    club = models.ForeignKey(Club, related_name="posters", verbose_name=_("club"), null=False)
     screens = models.ManyToManyField(Screen, related_name="posters")
     date_begin = models.DateTimeField(blank=False, null=False, default=timezone.now)
     date_end = models.DateTimeField(blank=True, null=True)
@@ -220,7 +220,7 @@ class Poster(models.Model):
     def is_owned_by(self, user):
         return user.is_in_group(settings.SITH_GROUP_COM_ADMIN_ID)
 
-    def can_moderate(self, user):
+    def can_be_moderated_by(self, user):
         return user.is_in_group(settings.SITH_GROUP_COM_ADMIN_ID)
 
     def __str__(self):
diff --git a/com/views.py b/com/views.py
index ab6dd64d..d891de8d 100644
--- a/com/views.py
+++ b/com/views.py
@@ -549,7 +549,7 @@ class PosterModerateView(IsComAdminMixin, ComTabsMixin, ModerateView):
     """Moderate communication poster"""
     def get(self, request, *args, **kwargs):
         obj = get_object_or_404(Poster, pk=kwargs['object_id'])
-        if obj.can_moderate(request.user):
+        if obj.can_be_moderated_by(request.user):
             obj.is_moderated = True
             obj.moderator = request.user
             obj.save()