diff --git a/tests/agendas/test_chrono.py b/tests/agendas/test_chrono.py
index c7833d2..8e1a509 100644
--- a/tests/agendas/test_chrono.py
+++ b/tests/agendas/test_chrono.py
@@ -163,8 +163,8 @@ def test_refresh_agendas(mock_collect):
     agenda1.category_slug = 'foo'
     agenda1.save()
     agenda2.label = 'Wrong'
-    agenda2.category_label is None
-    agenda2.category_slug is None
+    agenda2.category_label = None
+    agenda2.category_slug = None
     agenda2.save()
     refresh_agendas()
     assert Agenda.objects.count() == 2
diff --git a/tests/api/test_statistics.py b/tests/api/test_statistics.py
index cd51ad8..15cefae 100644
--- a/tests/api/test_statistics.py
+++ b/tests/api/test_statistics.py
@@ -10,9 +10,9 @@ pytestmark = pytest.mark.django_db
 
 def test_statistics_list(app, user):
     regie = Regie.objects.create(label='Regie 1')
-    agenda = Agenda.objects.create(label='Activity 1', regie=regie)
+    Agenda.objects.create(label='Activity 1', regie=regie)
 
-    regie2 = Regie.objects.create(label='Regie 2')
+    Regie.objects.create(label='Regie 2')
 
     # unauthorized
     app.get('/api/statistics/', status=403)
diff --git a/tests/pricing/test_models.py b/tests/pricing/test_models.py
index 45e34eb..cab5270 100644
--- a/tests/pricing/test_models.py
+++ b/tests/pricing/test_models.py
@@ -1209,21 +1209,20 @@ def test_get_pricing_data(context):
         },
     )
     agenda_pricing.agendas.add(agenda)
-    for subscription in [None, {'foo': 'bar'}]:
-        assert agenda_pricing.get_pricing_data(
-            request=context['request'],
-            pricing_date=datetime.date(year=2021, month=9, day=1),
-            user_external_id='child:42',
-            payer_external_id='parent:35',
-        ) == {
+    assert agenda_pricing.get_pricing_data(
+        request=context['request'],
+        pricing_date=datetime.date(year=2021, month=9, day=1),
+        user_external_id='child:42',
+        payer_external_id='parent:35',
+    ) == {
+        'pricing': 42,
+        'calculation_details': {
             'pricing': 42,
-            'calculation_details': {
-                'pricing': 42,
-                'criterias': {'foo': 'bar'},
-                'reduction_rate': {},
-                'context': {'domicile': 'commune', 'qf': '2'},
-            },
-        }
+            'criterias': {'foo': 'bar'},
+            'reduction_rate': {},
+            'context': {'domicile': 'commune', 'qf': '2'},
+        },
+    }
 
 
 def test_get_pricing_data_for_event(context):
diff --git a/tox.ini b/tox.ini
index c2132b4..b7416ac 100644
--- a/tox.ini
+++ b/tox.ini
@@ -65,7 +65,7 @@ deps =
   git+https://git.entrouvert.org/entrouvert/debian-django-ckeditor.git
 commands =
   ./getlasso3.sh
-  ./pylint.sh lingo/
+  ./pylint.sh lingo/ tests/
 
 [testenv:bandit]
 usedevelop = True