diff --git a/src/pretix/base/middleware.py b/src/pretix/base/middleware.py
index 0401a1477e..f300e72f36 100644
--- a/src/pretix/base/middleware.py
+++ b/src/pretix/base/middleware.py
@@ -3,7 +3,7 @@ from urllib.parse import urlsplit
 
 import pytz
 from django.conf import settings
-from django.http import HttpRequest, HttpResponse, Http404
+from django.http import Http404, HttpRequest, HttpResponse
 from django.middleware.common import CommonMiddleware
 from django.urls import get_script_prefix
 from django.utils import timezone, translation
diff --git a/src/tests/api/test_idempotency.py b/src/tests/api/test_idempotency.py
index 32d0a927c8..c92545d5d0 100644
--- a/src/tests/api/test_idempotency.py
+++ b/src/tests/api/test_idempotency.py
@@ -115,9 +115,9 @@ def test_ignore_outside_api(token_client, organizer):
     resp = token_client.post('/control/login'.format(organizer.slug),
                              PAYLOAD, format='json', HTTP_X_IDEMPOTENCY_KEY='foo')
     assert resp.status_code == 200
-    resp = token_client.post('/control/invalid'.format(organizer.slug),
+    resp = token_client.post('/control/invalid/'.format(organizer.slug),
                              PAYLOAD, format='json', HTTP_X_IDEMPOTENCY_KEY='foo')
-    assert resp.status_code == 301
+    assert resp.status_code == 302
 
 
 @pytest.fixture
diff --git a/src/tests/control/test_auth.py b/src/tests/control/test_auth.py
index b2daaa8186..6fd87963eb 100644
--- a/src/tests/control/test_auth.py
+++ b/src/tests/control/test_auth.py
@@ -783,7 +783,7 @@ def test_impersonate(user, client):
     response = client.get('/control/global/settings/')
     assert response.status_code == 403
     response = client.get('/control/')
-    response = client.post('/control/users/impersonate/stop', follow=True)
+    response = client.post('/control/users/impersonate/stop/', follow=True)
     assert b'dummy@' in response.content
     assert b'dummy2@' not in response.content
     response = client.get('/control/global/settings/')
@@ -825,7 +825,8 @@ def test_staff_session(user, client):
     assert response['Location'] == '/control/'
     response = client.get('/control/global/settings/')
     assert response.status_code == 200
-    client.post('/control/sudo/stop', follow=True)
+    response = client.get('/control/sudo/stop/', follow=True)
+    assert response.status_code == 200
     response = client.get('/control/global/settings/')
     assert response.status_code == 302
     assert user.staffsession_set.last().logs.filter(url='/control/global/settings/').exists()