diff --git a/mayan/apps/converter/backends/python.py b/mayan/apps/converter/backends/python.py
index da1e293557..5b9cb1d8cf 100644
--- a/mayan/apps/converter/backends/python.py
+++ b/mayan/apps/converter/backends/python.py
@@ -83,7 +83,9 @@ class Python(ConverterBase):
             try:
                 page_count = len(list(PDFPage.get_pages(file_object)))
             except Exception as exception:
-                error_message = _('Exception determining PDF page count; %s') % exception
+                error_message = _(
+                    'Exception determining PDF page count; %s'
+                ) % exception
                 logger.error(error_message)
                 raise PageCountError(error_message)
             else:
@@ -95,7 +97,9 @@ class Python(ConverterBase):
             try:
                 image = Image.open(self.file_object)
             except IOError as exception:
-                error_message = _('Exception determining PDF page count; %s') % exception
+                error_message = _(
+                    'Exception determining PDF page count; %s'
+                ) % exception
                 logger.error(error_message)
                 raise PageCountError(error_message)
             finally:
diff --git a/mayan/apps/converter/classes.py b/mayan/apps/converter/classes.py
index 11922d0cfe..1c25b36241 100644
--- a/mayan/apps/converter/classes.py
+++ b/mayan/apps/converter/classes.py
@@ -26,7 +26,9 @@ CHUNK_SIZE = 1024
 logger = logging.getLogger(__name__)
 
 try:
-    LIBREOFFICE = sh.Command(setting_libreoffice_path.value).bake('--headless', '--convert-to', 'pdf')
+    LIBREOFFICE = sh.Command(
+        setting_libreoffice_path.value
+    ).bake('--headless', '--convert-to', 'pdf')
 except sh.CommandNotFound:
     LIBREOFFICE = None
 
diff --git a/mayan/apps/sources/admin.py b/mayan/apps/sources/admin.py
index b8f2b38370..6360325b4e 100644
--- a/mayan/apps/sources/admin.py
+++ b/mayan/apps/sources/admin.py
@@ -27,7 +27,10 @@ class POP3EmailAdmin(admin.ModelAdmin):
 
 @admin.register(StagingFolderSource)
 class StagingFolderSourceAdmin(admin.ModelAdmin):
-    list_display = ('label', 'enabled', 'folder_path', 'preview_width', 'preview_height', 'uncompress', 'delete_after_upload')
+    list_display = (
+        'label', 'enabled', 'folder_path', 'preview_width', 'preview_height',
+        'uncompress', 'delete_after_upload'
+    )
 
 
 @admin.register(WatchFolderSource)
diff --git a/mayan/apps/sources/forms.py b/mayan/apps/sources/forms.py
index db2a29b9b9..2658396995 100644
--- a/mayan/apps/sources/forms.py
+++ b/mayan/apps/sources/forms.py
@@ -42,7 +42,10 @@ class UploadBaseForm(forms.Form):
         if show_expand:
             self.fields['expand'] = forms.BooleanField(
                 label=_('Expand compressed files'), required=False,
-                help_text=ugettext('Upload a compressed file\'s contained files as individual documents')
+                help_text=ugettext(
+                    'Upload a compressed file\'s contained files as '
+                    'individual documents'
+                )
             )
 
 
diff --git a/mayan/apps/sources/tasks.py b/mayan/apps/sources/tasks.py
index ad6108823e..9d6ee5c1e1 100644
--- a/mayan/apps/sources/tasks.py
+++ b/mayan/apps/sources/tasks.py
@@ -37,7 +37,9 @@ def task_upload_document(self, source_id, document_type_id, shared_uploaded_file
     try:
         document_type = DocumentType.objects.get(pk=document_type_id)
         source = Source.objects.get_subclass(pk=source_id)
-        shared_upload = SharedUploadedFile.objects.get(pk=shared_uploaded_file_id)
+        shared_upload = SharedUploadedFile.objects.get(
+            pk=shared_uploaded_file_id
+        )
 
         if user_id:
             user = User.objects.get(pk=user_id)
diff --git a/mayan/apps/sources/widgets.py b/mayan/apps/sources/widgets.py
index acde863355..283624010a 100644
--- a/mayan/apps/sources/widgets.py
+++ b/mayan/apps/sources/widgets.py
@@ -15,7 +15,8 @@ from documents.settings import setting_preview_size, setting_thumbnail_size
 
 def staging_file_thumbnail(staging_file, **kwargs):
     return staging_file_html_widget(
-        staging_file, click_view='rest_api:stagingfolderfile-image-view', **kwargs
+        staging_file, click_view='rest_api:stagingfolderfile-image-view',
+        **kwargs
     )