diff --git a/tienda_ilusion/don_confiao/tests/test_api.py b/tienda_ilusion/don_confiao/tests/test_api.py
index 7ba1b6d..9221f26 100644
--- a/tienda_ilusion/don_confiao/tests/test_api.py
+++ b/tienda_ilusion/don_confiao/tests/test_api.py
@@ -68,7 +68,10 @@ class TestAPI(APITestCase):
         json_response = json.loads(response.content.decode('utf-8'))
         self.assertEqual(response.status_code, 200)
         self.assertEqual(self.customer.name, json_response[0]['name'])
-        self.assertEqual(self.customer.external_id, json_response[0]['external_id'])
+        self.assertEqual(
+            self.customer.external_id,
+            json_response[0]['external_id']
+        )
 
     def test_get_sales_for_tryton(self):
         url = '/don_confiao/api/sales/for_tryton'