diff --git a/openslides/assignment/views.py b/openslides/assignment/views.py
index 298df161b..9cd64144d 100644
--- a/openslides/assignment/views.py
+++ b/openslides/assignment/views.py
@@ -307,7 +307,7 @@ class AssignmentPollDelete(DeleteView):
         return reverse('assignment_view', args=[self.assignment.id])
 
     def get_success_message(self):
-        return _('Ballot was successfully deleted.') % self.object
+        return _('Ballot was successfully deleted.')
 
 
 class AssignmentPDF(PDFView):
diff --git a/tests/assignment/__init__.py b/tests/assignment/__init__.py
new file mode 100644
index 000000000..e69de29bb
diff --git a/tests/assignment/test_views.py b/tests/assignment/test_views.py
new file mode 100644
index 000000000..70b7d13fb
--- /dev/null
+++ b/tests/assignment/test_views.py
@@ -0,0 +1,66 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+"""
+    Tests for openslides.assignment.models
+    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+    :copyright: 2011–2013 by OpenSlides team, see AUTHORS.
+    :license: GNU GPL, see LICENSE for more details.
+"""
+
+from django.test.client import Client
+
+from openslides.config.api import config
+from openslides.utils.test import TestCase
+from openslides.assignment.models import Assignment
+from openslides.participant.models import User, Group
+
+
+class AssignmentViewTestCase(TestCase):
+    def setUp(self):
+        # Admin
+        self.admin = User.objects.create_superuser('admin', 'admin@admin.admin', 'admin')
+        self.admin_client = Client()
+        self.admin_client.login(username='admin', password='admin')
+
+        # Staff
+        self.staff = User.objects.create_user('staff', 'staff@user.user', 'staff')
+        staff_group = Group.objects.get(name='Staff')
+        self.staff.groups.add(staff_group)
+        self.staff.save()
+        self.staff_client = Client()
+        self.staff_client.login(username='staff', password='staff')
+
+        # Delegate
+        self.delegate = User.objects.create_user('delegate', 'delegate@user.user', 'delegate')
+        delegate_group = Group.objects.get(name='Delegates')
+        self.delegate.groups.add(delegate_group)
+        self.delegate.save()
+        self.delegate_client = Client()
+        self.delegate_client.login(username='delegate', password='delegate')
+
+        # Registered
+        self.registered = User.objects.create_user('registered', 'registered@user.user', 'registered')
+        self.registered_client = Client()
+        self.registered_client.login(username='registered', password='registered')
+
+        self.assignment1 = Assignment.objects.create(name='test', posts=2)
+
+    def check_url(self, url, test_client, response_cose):
+        response = test_client.get(url)
+        self.assertEqual(response.status_code, response_cose)
+        return response
+
+
+class TestAssignmentPollDelete(AssignmentViewTestCase):
+    def setUp(self):
+        super(TestAssignmentPollDelete, self).setUp()
+        self.assignment1.gen_poll()
+
+    def test_get(self):
+        response = self.check_url('/assignment/poll/1/del/', self.admin_client, 302)
+        self.assertRedirects(response, 'assignment/1/')
+
+    def test_post(self):
+        response = self.admin_client.post('/assignment/poll/1/del/', {'yes': 1})
+        self.assertRedirects(response, '/assignment/1/')