diff --git a/frontend/tests.py b/frontend/tests.py
index 5ea3c31..5a9639c 100644
--- a/frontend/tests.py
+++ b/frontend/tests.py
@@ -6,19 +6,22 @@ from django.contrib.staticfiles import finders
 
 # Create your tests here.
 
+
 class DictionnariesTest(TestCase):
     def setUp(self) -> None:
-        self.client = Client();
-        self.directory = finders.find('js/lang/');
+        self.client = Client()
+        self.directory = finders.find('js/lang/')
 
     def test_lang(self):
         keys = None
+        keys_file = None
 
-        json_files = listdir(self.directory);
+        json_files = listdir(self.directory)
         for file in json_files:
             with open(f'{self.directory}/{file}') as f:
-                data: dict = json.load(f);
+                data: dict = json.load(f)
                 if (keys is None):
-                    keys = set(data.keys());
+                    keys = set(data.keys())
+                    keys_file = file
                 else:
-                    self.assertEqual(set(data.keys()), keys);
+                    self.assertEqual(set(data.keys()), keys, f'{file} differs from {keys_file}')