diff --git a/mayan/apps/user_management/tests/test_api.py b/mayan/apps/user_management/tests/test_api.py
index 48cd5bc976..8d2a009afd 100644
--- a/mayan/apps/user_management/tests/test_api.py
+++ b/mayan/apps/user_management/tests/test_api.py
@@ -107,7 +107,7 @@ class GroupAPITestCase(GroupAPITestMixin, GroupTestMixin, BaseAPITestCase):
         self.assertNotEqual(self.test_group.name, group_name)
 
 
-class UserAPITestCase(UserAPITestMixin, UserTestMixin, BaseAPITestCase):
+class UserAPITestCase(UserAPITestMixin, BaseAPITestCase):
     def test_user_create_api_view_no_permission(self):
         user_count = get_user_model().objects.count()
 
@@ -194,7 +194,7 @@ class UserAPITestCase(UserAPITestMixin, UserTestMixin, BaseAPITestCase):
         self.assertNotEqual(self.test_user.username, user_username)
 
 
-class UserGroupAPITestCase(GroupTestMixin, UserAPITestMixin, UserTestMixin, BaseAPITestCase):
+class UserGroupAPITestCase(GroupTestMixin, UserAPITestMixin, BaseAPITestCase):
     def test_user_create_with_group_api_view_no_permission(self):
         self._create_test_group()
 
diff --git a/mayan/apps/user_management/tests/test_events.py b/mayan/apps/user_management/tests/test_events.py
index 4f0cab8d5f..9e390dd3e0 100644
--- a/mayan/apps/user_management/tests/test_events.py
+++ b/mayan/apps/user_management/tests/test_events.py
@@ -21,7 +21,9 @@ from .mixins import (
 )
 
 
-class GroupEventsViewTestCase(GroupTestMixin, GroupViewTestMixin, UserTestMixin, GenericViewTestCase):
+class GroupEventsViewTestCase(
+    GroupTestMixin, GroupViewTestMixin, GenericViewTestCase
+):
     def test_group_create_event(self):
         self.grant_permission(
             permission=permission_group_create
@@ -53,7 +55,9 @@ class GroupEventsViewTestCase(GroupTestMixin, GroupViewTestMixin, UserTestMixin,
         self.assertEqual(action.verb, event_group_edited.id)
 
 
-class GroupEventsAPITestCase(GroupAPITestMixin, GroupTestMixin, GroupViewTestMixin, BaseAPITestCase):
+class GroupEventsAPITestCase(
+    GroupAPITestMixin, GroupTestMixin, GroupViewTestMixin, BaseAPITestCase
+):
     def test_group_create_event_from_api_view(self):
         self.grant_permission(
             permission=permission_group_create
@@ -91,7 +95,7 @@ class GroupEventsAPITestCase(GroupAPITestMixin, GroupTestMixin, GroupViewTestMix
         self.assertEqual(action.verb, event_group_edited.id)
 
 
-class UserEventsTestCase(UserTestMixin, GenericViewTestCase):
+class UserEventsTestCase(GenericViewTestCase):
     auto_login_user = False
     create_test_case_user = False
 
@@ -130,7 +134,9 @@ class UserEventsTestCase(UserTestMixin, GenericViewTestCase):
         self.assertEqual(action.verb, event_user_logged_out.id)
 
 
-class UserEventsViewTestCase(UserAPITestMixin, UserTestMixin, UserViewTestMixin, GenericViewTestCase):
+class UserEventsViewTestCase(
+    UserAPITestMixin, UserViewTestMixin, GenericViewTestCase
+):
     def test_user_create_event_from_view(self):
         self.grant_permission(
             permission=permission_user_create
@@ -164,7 +170,9 @@ class UserEventsViewTestCase(UserAPITestMixin, UserTestMixin, UserViewTestMixin,
         self.assertEqual(action.verb, event_user_edited.id)
 
 
-class UserEventsAPITestCase(UserAPITestMixin, UserTestMixin, UserViewTestMixin, BaseAPITestCase):
+class UserEventsAPITestCase(
+    UserAPITestMixin, UserViewTestMixin, BaseAPITestCase
+):
     def test_user_create_event_from_api_view(self):
         self.grant_permission(
             permission=permission_user_create
diff --git a/mayan/apps/user_management/tests/test_views.py b/mayan/apps/user_management/tests/test_views.py
index 3733aadefe..4e5b4c9728 100644
--- a/mayan/apps/user_management/tests/test_views.py
+++ b/mayan/apps/user_management/tests/test_views.py
@@ -19,7 +19,7 @@ from .mixins import (
 )
 
 
-class GroupViewsTestCase(GroupTestMixin, GroupViewTestMixin, UserTestMixin, GenericViewTestCase):
+class GroupViewsTestCase(GroupTestMixin, GroupViewTestMixin, GenericViewTestCase):
     def test_group_create_view_no_permission(self):
         group_count = Group.objects.count()
 
@@ -158,7 +158,7 @@ class GroupViewsTestCase(GroupTestMixin, GroupViewTestMixin, UserTestMixin, Gene
         )
 
 
-class SuperUserViewTestCase(UserTestMixin, UserViewTestMixin, GenericViewTestCase):
+class SuperUserViewTestCase(UserViewTestMixin, GenericViewTestCase):
     def setUp(self):
         super(SuperUserViewTestCase, self).setUp()
         self._create_test_superuser()
@@ -199,7 +199,7 @@ class SuperUserViewTestCase(UserTestMixin, UserViewTestMixin, GenericViewTestCas
         self.assertEqual(response.status_code, 404)
 
 
-class UserViewTestCase(UserTestMixin, UserViewTestMixin, GenericViewTestCase):
+class UserViewTestCase(UserViewTestMixin, GenericViewTestCase):
     def test_user_create_view_no_permission(self):
         user_count = get_user_model().objects.count()
 
@@ -263,7 +263,9 @@ class UserViewTestCase(UserTestMixin, UserViewTestMixin, GenericViewTestCase):
         self.assertEqual(get_user_model().objects.count(), user_count - 1)
 
 
-class UserGroupViewTestCase(GroupTestMixin, UserTestMixin, UserViewTestMixin, GenericViewTestCase):
+class UserGroupViewTestCase(
+    GroupTestMixin, UserViewTestMixin, GenericViewTestCase
+):
     def test_user_groups_view_no_permission(self):
         self._create_test_user()
         self._create_test_group()