diff --git a/gregui/tests/api/test_invite_guest.py b/gregui/tests/api/test_invite_guest.py
index 17314b2acbbb24de4055c257d5a17180f67139fb..8b6c2e79deb4ec25b41e40c653f8c35eef8e76fb 100644
--- a/gregui/tests/api/test_invite_guest.py
+++ b/gregui/tests/api/test_invite_guest.py
@@ -9,19 +9,24 @@ from gregui.api.views.invitation import CreateInvitationView
 
 @pytest.mark.django_db
 def test_invite_guest(client, user_sponsor, unit_foo, role_type_foo):
-    data = {'first_name': 'Foo', 'last_name': 'Bar', 'email': 'test@example.com', 'role': {
-        'start_date': '2019-08-06',
-        'end_date': '2019-08-10',
-        'orgunit_id': unit_foo.id,
-        'type': role_type_foo.id
-    }}
-    url = reverse('gregui-v1:invite-create')
+    data = {
+        "first_name": "Foo",
+        "last_name": "Bar",
+        "email": "test@example.com",
+        "role": {
+            "start_date": "2019-08-06",
+            "end_date": "2019-08-10",
+            "orgunit_id": unit_foo.id,
+            "type": role_type_foo.id,
+        },
+    }
+    url = reverse("gregui-v1:invite-create")
 
     all_persons = Person.objects.all()
     assert len(all_persons) == 0
 
     factory = APIRequestFactory()
-    request = factory.post(url, data, format='json')
+    request = factory.post(url, data, format="json")
     force_authenticate(request, user=user_sponsor)
 
     view = CreateInvitationView.as_view()
@@ -32,5 +37,5 @@ def test_invite_guest(client, user_sponsor, unit_foo, role_type_foo):
     all_persons = Person.objects.all()
 
     assert len(all_persons) == 1
-    assert all_persons[0].first_name == 'Foo'
-    assert all_persons[0].last_name == 'Bar'
+    assert all_persons[0].first_name == "Foo"
+    assert all_persons[0].last_name == "Bar"
diff --git a/gregui/tests/conftest.py b/gregui/tests/conftest.py
index 8f908ab74a25aa4aa455176e8f656f738410bedf..b71080b0e796c069861d615453d07e824b6e5a7f 100644
--- a/gregui/tests/conftest.py
+++ b/gregui/tests/conftest.py
@@ -35,12 +35,9 @@ def role_type_foo() -> RoleType:
 @pytest.fixture
 def sponsor_guy(unit_foo: OrganizationalUnit) -> Sponsor:
     sponsor = Sponsor.objects.create(
-        feide_id="guy@example.org",
-        first_name="Sponsor",
-        last_name="Guy"
+        feide_id="guy@example.org", first_name="Sponsor", last_name="Guy"
     )
-    sponsor.units.add(unit_foo,
-                      through_defaults={"hierarchical_access": False})
+    sponsor.units.add(unit_foo, through_defaults={"hierarchical_access": False})
     return Sponsor.objects.get(id=sponsor.id)
 
 
@@ -50,10 +47,10 @@ def user_sponsor(sponsor_guy: Sponsor) -> User:
 
     # Create a user and link him to a sponsor
     user = user_model.objects.create(
-        username='test_sponsor',
-        email='test@example.org',
+        username="test_sponsor",
+        email="test@example.org",
         first_name="Test",
-        last_name="Sponsor"
+        last_name="Sponsor",
     )
     GregUserProfile.objects.create(user=user, sponsor=sponsor_guy)