diff --git a/mayan/apps/common/apps.py b/mayan/apps/common/apps.py
index 53df51ce0d..c70585fc1b 100644
--- a/mayan/apps/common/apps.py
+++ b/mayan/apps/common/apps.py
@@ -213,11 +213,11 @@ class CommonApp(MayanAppConfig):
 
             if os.path.exists(settings.MEDIA_ROOT) and setting_production_error_logging.value:
                 logging_configuration['handlers']['logfile'] = {
-                        'backupCount': 3,
-                        'class': 'logging.handlers.RotatingFileHandler',
-                        'filename': setting_production_error_log_path.value,
-                        'formatter': 'logfile',
-                        'maxBytes': 1024,
+                    'backupCount': 3,
+                    'class': 'logging.handlers.RotatingFileHandler',
+                    'filename': setting_production_error_log_path.value,
+                    'formatter': 'logfile',
+                    'maxBytes': 1024,
                 }
 
             logging.config.dictConfig(logging_configuration)
diff --git a/mayan/apps/common/icons.py b/mayan/apps/common/icons.py
index 49e4dff16d..413e807e62 100644
--- a/mayan/apps/common/icons.py
+++ b/mayan/apps/common/icons.py
@@ -40,6 +40,6 @@ icon_setup = Icon(
 icon_support = Icon(
     driver_name='fontawesome', symbol='phone'
 )
-icon_tools =  Icon(
+icon_tools = Icon(
     driver_name='fontawesome', symbol='wrench'
 )
diff --git a/mayan/apps/common/management/commands/initialsetup.py b/mayan/apps/common/management/commands/initialsetup.py
index 1eeb3de98a..91eba1078a 100644
--- a/mayan/apps/common/management/commands/initialsetup.py
+++ b/mayan/apps/common/management/commands/initialsetup.py
@@ -31,6 +31,7 @@ class Command(management.BaseCommand):
             '--no-javascript', action='store_true', dest='no_javascript',
             help='Don\'t download the Javascript dependencies.',
         )
+
     def initialize_system(self, force=False):
         system_path = os.path.join(settings.MEDIA_ROOT, SYSTEM_DIR)
         settings_path = os.path.join(settings.MEDIA_ROOT, 'mayan_settings')
diff --git a/mayan/apps/common/widgets.py b/mayan/apps/common/widgets.py
index 01030856a1..f8ebf0fca4 100644
--- a/mayan/apps/common/widgets.py
+++ b/mayan/apps/common/widgets.py
@@ -4,7 +4,6 @@ from django import forms
 from django.utils.encoding import force_text
 from django.utils.html import format_html
 from django.utils.safestring import mark_safe
-from django.utils.translation import ugettext_lazy as _
 
 
 class DisableableSelectWidget(forms.SelectMultiple):
diff --git a/mayan/apps/documents/runtime.py b/mayan/apps/documents/runtime.py
index 15c09b5dd0..f10fe5204d 100644
--- a/mayan/apps/documents/runtime.py
+++ b/mayan/apps/documents/runtime.py
@@ -6,8 +6,6 @@ from django.utils.translation import ugettext_lazy as _
 
 from .settings import setting_language_codes
 
-import operator
-
 language_choices = sorted(
     [
         (
diff --git a/mayan/apps/ocr/links.py b/mayan/apps/ocr/links.py
index fff0e796df..6aa928b700 100644
--- a/mayan/apps/ocr/links.py
+++ b/mayan/apps/ocr/links.py
@@ -46,7 +46,7 @@ link_document_ocr_errors_list = Link(
     view='ocr:document_ocr_error_list'
 )
 link_document_ocr_download = Link(
-    args='resolved_object.id',  icon_class=icon_document_ocr_download,
+    args='resolved_object.id', icon_class=icon_document_ocr_download,
     permissions=(permission_ocr_content_view,), text=_('Download OCR text'),
     view='ocr:document_ocr_download'
 )
diff --git a/mayan/apps/sources/tests/test_models.py b/mayan/apps/sources/tests/test_models.py
index 05e8b11279..ca050d6546 100644
--- a/mayan/apps/sources/tests/test_models.py
+++ b/mayan/apps/sources/tests/test_models.py
@@ -18,7 +18,7 @@ from metadata.models import MetadataType
 
 from ..literals import SOURCE_UNCOMPRESS_CHOICE_Y
 from ..models import (
-    EmailBaseModel, IMAPEmail, POP3Email, WatchFolderSource, WebFormSource
+    EmailBaseModel, POP3Email, WatchFolderSource, WebFormSource
 )
 
 from .literals import (