diff --git a/tests/app/main/views/test_dashboard.py b/tests/app/main/views/test_dashboard.py
index f92efbb19..d46235668 100644
--- a/tests/app/main/views/test_dashboard.py
+++ b/tests/app/main/views/test_dashboard.py
@@ -1884,7 +1884,7 @@ def test_service_dashboard_shows_batched_jobs(
     assert len(rows) == 1
 
 
-@pytest.fixture
+@pytest.fixture()
 def app_with_socketio():
     app = Flask("app")
     create_app(app)
@@ -1892,10 +1892,18 @@ def app_with_socketio():
 
 
 @pytest.mark.parametrize(
-    "service_id, date_range, expected_call_args",
+    ("service_id", "date_range", "expected_call_args"),
     [
-        (SERVICE_ONE_ID, {"start_date": "2024-01-01", "days": 7}, {"service_id": SERVICE_ONE_ID, "start_date": "2024-01-01", "days": 7}),
-        (SERVICE_TWO_ID, {"start_date": "2023-06-01", "days": 7}, {"service_id": SERVICE_TWO_ID, "start_date": "2023-06-01", "days": 7}),
+        (
+            SERVICE_ONE_ID,
+            {"start_date": "2024-01-01", "days": 7},
+            {"service_id": SERVICE_ONE_ID, "start_date": "2024-01-01", "days": 7}
+        ),
+        (
+            SERVICE_TWO_ID,
+            {"start_date": "2023-06-01", "days": 7},
+            {"service_id": SERVICE_TWO_ID, "start_date": "2023-06-01", "days": 7}
+        ),
     ]
 )
 def test_fetch_daily_stats(
@@ -1914,7 +1922,10 @@ def test_fetch_daily_stats(
     mock_service_api = mocker.patch(
         "app.service_api_client.get_service_notification_statistics_by_day",
         return_value={
-            date_range["start_date"]: {"email": {"delivered": 0, "failure": 0, "requested": 0}, "sms": {"delivered": 0, "failure": 1, "requested": 1}},
+            date_range["start_date"]: {
+                "email": {"delivered": 0, "failure": 0, "requested": 0},
+                "sms": {"delivered": 0, "failure": 1, "requested": 1}
+            },
         }
     )
 
@@ -1929,7 +1940,10 @@ def test_fetch_daily_stats(
         assert received, "Should receive a response message"
         assert received[0]['name'] == 'daily_stats_update'
         assert received[0]['args'][0] == {
-            date_range["start_date"]: {"email": {"delivered": 0, "failure": 0, "requested": 0}, "sms": {"delivered": 0, "failure": 1, "requested": 1}},
+            date_range["start_date"]: {
+                "email": {"delivered": 0, "failure": 0, "requested": 0},
+                "sms": {"delivered": 0, "failure": 1, "requested": 1}
+            },
         }
 
         mock_service_api.assert_called_once_with(