diff --git a/mayan/apps/acls/managers.py b/mayan/apps/acls/managers.py
index 914fc0a790..f625f40836 100644
--- a/mayan/apps/acls/managers.py
+++ b/mayan/apps/acls/managers.py
@@ -7,7 +7,7 @@ from django.core.exceptions import PermissionDenied
 from django.db import models
 from django.db.models import Q
 from django.utils.encoding import force_text
-from django.utils.translation import ugettext, ugettext_lazy as _
+from django.utils.translation import ugettext
 
 from common.utils import return_attrib, return_related
 from permissions import Permission
diff --git a/mayan/apps/common/tests/base.py b/mayan/apps/common/tests/base.py
index 9a40f9f829..91a2b611b9 100644
--- a/mayan/apps/common/tests/base.py
+++ b/mayan/apps/common/tests/base.py
@@ -1,5 +1,4 @@
 from __future__ import absolute_import, unicode_literals
-import importlib
 
 from django.test import TestCase
 
diff --git a/mayan/apps/document_states/models.py b/mayan/apps/document_states/models.py
index d553c7201d..8262e1dcce 100644
--- a/mayan/apps/document_states/models.py
+++ b/mayan/apps/document_states/models.py
@@ -218,9 +218,6 @@ class WorkflowState(models.Model):
         except (TypeError, ValueError):
             self.completion = 0
 
-        #if not self.completion:
-        #    self.completion = 0
-
         if self.initial:
             self.workflow.states.all().update(initial=False)
         return super(WorkflowState, self).save(*args, **kwargs)
diff --git a/mayan/apps/sources/tests/test_models.py b/mayan/apps/sources/tests/test_models.py
index 4ea9f1a8c6..8f8c52b6bd 100644
--- a/mayan/apps/sources/tests/test_models.py
+++ b/mayan/apps/sources/tests/test_models.py
@@ -108,7 +108,7 @@ class EmailFilenameDecodingTestCase(BaseTestCase):
 
     def test_decode_email_zero_length_attachment(self):
         self._create_email_source()
-        self.source.store_body=False
+        self.source.store_body = False
         self.source.save()
 
         EmailBaseModel.process_message(