diff --git a/jarbas/api/tests/test_same_day_view.py b/jarbas/api/tests/test_same_day_view.py
index 380730f..bf57c7e 100644
--- a/jarbas/api/tests/test_same_day_view.py
+++ b/jarbas/api/tests/test_same_day_view.py
@@ -12,7 +12,7 @@ class TestSameDay(TestCase):
 
     def setUp(self):
         self.maxDiff = 2 ** 10
-        cnpj =  '12345678901234'
+        cnpj = '12345678901234'
 
         company1 = sample_company_data.copy()
         company1['cnpj'] = format_cnpj(cnpj)
diff --git a/jarbas/core/tests/test_irregularities_command.py b/jarbas/core/tests/test_irregularities_command.py
index 443a1fb..a133838 100644
--- a/jarbas/core/tests/test_irregularities_command.py
+++ b/jarbas/core/tests/test_irregularities_command.py
@@ -67,6 +67,7 @@ def test_serializer_without_suspicions(self):
         }
         self.assertEqual(self.command.serialize(input), expected)
 
+
 class TestCustomMethods(TestCommand):
 
     @patch('jarbas.core.management.commands.irregularities.Command.irregularities')
@@ -83,7 +84,7 @@ def test_schedule_update_existing_record(self, get):
         reimbursement = Reimbursement()
         get.return_value = reimbursement
         content = {
-            'document_id' : 42,
+            'document_id': 42,
             'probability': 0.618,
             'suspicions': {'answer': 42}
         }
@@ -97,7 +98,7 @@ def test_schedule_update_existing_record(self, get):
     @patch.object(Reimbursement.objects, 'get')
     def test_schedule_update_non_existing_record(self, get):
         get.side_effect = Reimbursement.DoesNotExist
-        content = {'document_id' : 42}
+        content = {'document_id': 42}
         self.command.queue = []
         self.command.schedule_update(content)
         get.assert_called_once_with(document_id=42)
diff --git a/jarbas/core/tests/test_load_command.py b/jarbas/core/tests/test_load_command.py
index d2835f4..01445d8 100644
--- a/jarbas/core/tests/test_load_command.py
+++ b/jarbas/core/tests/test_load_command.py
@@ -83,4 +83,4 @@ def test_add_arguments(self):
     def test_add_arguments_without_drop_all(self):
         mock = Mock()
         LoadCommand().add_arguments(mock, add_drop_all=False)
-        self.assertEqual(1, mock.add_argument.call_count)
\ No newline at end of file
+        self.assertEqual(1, mock.add_argument.call_count)
diff --git a/jarbas/core/tests/test_receipt_class.py b/jarbas/core/tests/test_receipt_class.py
index c3dca29..60ab91f 100644
--- a/jarbas/core/tests/test_receipt_class.py
+++ b/jarbas/core/tests/test_receipt_class.py
@@ -1,4 +1,3 @@
-from json import loads
 from unittest.mock import patch
 
 from django.test import TestCase