diff --git a/mayan/apps/common/apps.py b/mayan/apps/common/apps.py
index 09caf48444..07c473f8c5 100644
--- a/mayan/apps/common/apps.py
+++ b/mayan/apps/common/apps.py
@@ -25,7 +25,7 @@ from .links import (
     link_tools
 )
 from .literals import DELETE_STALE_UPLOADS_INTERVAL
-from .menus import menu_about, menu_facet, menu_main, menu_tools, menu_user
+from .menus import menu_about, menu_main, menu_tools, menu_user
 from .licenses import *  # NOQA
 from .settings import setting_auto_logging
 from .tasks import task_delete_stale_uploads  # NOQA - Force task registration
diff --git a/mayan/apps/converter/tests/test_views.py b/mayan/apps/converter/tests/test_views.py
index bd7daa5d39..1ede5e71a6 100644
--- a/mayan/apps/converter/tests/test_views.py
+++ b/mayan/apps/converter/tests/test_views.py
@@ -2,13 +2,12 @@ from __future__ import unicode_literals
 
 from django.contrib.contenttypes.models import ContentType
 
-from converter.models import Transformation
-from converter.permissions import permission_transformation_delete
 from documents.tests.test_views import GenericDocumentViewTestCase
 
 from ..models import Transformation
 from ..permissions import (
-    permission_transformation_create, permission_transformation_view
+    permission_transformation_create, permission_transformation_delete,
+    permission_transformation_view
 )
 
 from .literals import TEST_TRANSFORMATION_NAME, TEST_TRANSFORMATION_ARGUMENT
@@ -46,7 +45,7 @@ class TransformationViewsTestCase(GenericDocumentViewTestCase):
                 'app_label': 'documents', 'model': 'document',
                 'object_id': self.document.pk
             }, data={
-                'name':TEST_TRANSFORMATION_NAME,
+                'name': TEST_TRANSFORMATION_NAME,
                 'arguments': TEST_TRANSFORMATION_ARGUMENT
             }
         )
diff --git a/mayan/apps/documents/forms.py b/mayan/apps/documents/forms.py
index 37444188bf..ab3dad828d 100644
--- a/mayan/apps/documents/forms.py
+++ b/mayan/apps/documents/forms.py
@@ -227,10 +227,10 @@ class DocumentPrintForm(forms.Form):
 
 class DocumentPageNumberForm(forms.Form):
     page = forms.ModelChoiceField(
-        queryset=None,
-        help_text=_('Page number from which all the transformation will be '
-        'cloned. Existing transformations will be lost.'
-        )
+        help_text=_(
+            'Page number from which all the transformation will be cloned. '
+            'Existing transformations will be lost.'
+        ), queryset=None
     )
 
     def __init__(self, *args, **kwargs):
diff --git a/mayan/apps/documents/tests/test_utils.py b/mayan/apps/documents/tests/test_utils.py
index 9a69b81199..8ea97d5079 100644
--- a/mayan/apps/documents/tests/test_utils.py
+++ b/mayan/apps/documents/tests/test_utils.py
@@ -12,7 +12,7 @@ class DocumentUtilsTestCase(BaseTestCase):
         )
 
         self.assertEqual(
-            parse_range('1-5'), [1, 2, 3, 4 ,5]
+            parse_range('1-5'), [1, 2, 3, 4, 5]
         )
 
         self.assertEqual(
diff --git a/mayan/apps/ocr/tests/test_views.py b/mayan/apps/ocr/tests/test_views.py
index fd28e29d0c..4a05bc38e0 100644
--- a/mayan/apps/ocr/tests/test_views.py
+++ b/mayan/apps/ocr/tests/test_views.py
@@ -1,6 +1,5 @@
 from __future__ import unicode_literals
 
-from django.core import mail
 from django.test import override_settings
 
 from documents.tests.test_views import GenericDocumentViewTestCase