diff --git a/com/migrations/0005_auto_20180318_2227.py b/com/migrations/0005_auto_20180318_2227.py
new file mode 100644
index 00000000..3b0cb351
--- /dev/null
+++ b/com/migrations/0005_auto_20180318_2227.py
@@ -0,0 +1,19 @@
+# -*- coding: utf-8 -*-
+from __future__ import unicode_literals
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('com', '0004_auto_20171221_1614'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='poster',
+            name='display_time',
+            field=models.IntegerField(verbose_name='display time', default=15),
+        ),
+    ]
diff --git a/com/models.py b/com/models.py
index b74e7904..47ae771d 100644
--- a/com/models.py
+++ b/com/models.py
@@ -212,7 +212,7 @@ class Poster(models.Model):
     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)
-    display_time = models.IntegerField(_("display time"), blank=False, null=False, default=30)
+    display_time = models.IntegerField(_("display time"), blank=False, null=False, default=15)
     is_moderated = models.BooleanField(_("is moderated"), default=False)
     moderator = models.ForeignKey(User, related_name="moderated_posters", verbose_name=_("moderator"), null=True, blank=True)
 
diff --git a/com/views.py b/com/views.py
index a8d906cc..072ca8ae 100644
--- a/com/views.py
+++ b/com/views.py
@@ -72,6 +72,7 @@ class PosterForm(forms.ModelForm):
         if self.user:
             if not self.user.is_com_admin:
                 self.fields['club'].queryset = Club.objects.filter(id__in=self.user.clubs_with_rights)
+                self.fields['display_time'].widget = forms.HiddenInput()
 
 
 class ComTabsMixin(TabedViewMixin):