diff --git a/src/fobi/contrib/plugins/form_elements/test/dummy/__init__.py b/src/fobi/contrib/plugins/form_elements/test/dummy/__init__.py
index 6e684c2a..4a69d39f 100644
--- a/src/fobi/contrib/plugins/form_elements/test/dummy/__init__.py
+++ b/src/fobi/contrib/plugins/form_elements/test/dummy/__init__.py
@@ -4,6 +4,7 @@ __copyright__ = '2014-2016 Artur Barseghyan'
 __license__ = 'GPL 2.0/LGPL 2.1'
 __all__ = ('default_app_config', 'UID',)
 
-default_app_config = 'fobi.contrib.plugins.form_elements.test.dummy.apps.Config'
+default_app_config = 'fobi.contrib.plugins.form_elements.test.' \
+                     'dummy.apps.Config'
 
 UID = 'dummy'
diff --git a/src/fobi/contrib/plugins/form_elements/test/dummy/apps.py b/src/fobi/contrib/plugins/form_elements/test/dummy/apps.py
index 7b78f5df..3d47c39a 100644
--- a/src/fobi/contrib/plugins/form_elements/test/dummy/apps.py
+++ b/src/fobi/contrib/plugins/form_elements/test/dummy/apps.py
@@ -8,6 +8,8 @@ try:
     from django.apps import AppConfig
 
     class Config(AppConfig):
+        """Config."""
+
         name = 'fobi.contrib.plugins.form_elements.test.dummy'
         label = 'fobi_contrib_plugins_form_elements_test_dummy'
 
diff --git a/src/fobi/contrib/plugins/form_elements/test/dummy/fobi_form_elements.py b/src/fobi/contrib/plugins/form_elements/test/dummy/fobi_form_elements.py
index e76cfb2a..a1b2a752 100644
--- a/src/fobi/contrib/plugins/form_elements/test/dummy/fobi_form_elements.py
+++ b/src/fobi/contrib/plugins/form_elements/test/dummy/fobi_form_elements.py
@@ -1,9 +1,3 @@
-__title__ = 'fobi.contrib.plugins.form_elements.test.dummy.fobi_form_elements'
-__author__ = 'Artur Barseghyan <artur.barseghyan@gmail.com>'
-__copyright__ = '2014-2016 Artur Barseghyan'
-__license__ = 'GPL 2.0/LGPL 2.1'
-__all__ = ('DummyPlugin',)
-
 from uuid import uuid4
 
 from django.utils.translation import ugettext, ugettext_lazy as _
@@ -15,26 +9,33 @@ from fobi.helpers import safe_text
 
 from . import UID
 
+__title__ = 'fobi.contrib.plugins.form_elements.test.dummy.fobi_form_elements'
+__author__ = 'Artur Barseghyan <artur.barseghyan@gmail.com>'
+__copyright__ = '2014-2016 Artur Barseghyan'
+__license__ = 'GPL 2.0/LGPL 2.1'
+__all__ = ('DummyPlugin',)
+
+
 class DummyPlugin(FormElementPlugin):
-    """
-    Dummy plugin.
-    """
+    """Dummy plugin."""
+
     uid = UID
     name = _("Dummy")
     group = _("Testing")
 
     def post_processor(self):
-        """
+        """Post process data.
+
         Always the same.
         """
         self.data.name = "{0}_{1}".format(self.uid, uuid4())
 
     def get_form_field_instances(self, request=None):
-        """
-        Get form field instances.
-        """
+        """Get form field instances."""
         kwargs = {
-            'initial': "<p>{0}</p>".format(safe_text(ugettext("Dummy content"))),
+            'initial': "<p>{0}</p>".format(
+                safe_text(ugettext("Dummy content"))
+            ),
             'required': False,
             'label': '',
         }
diff --git a/src/fobi/contrib/plugins/form_elements/test/dummy/widgets.py b/src/fobi/contrib/plugins/form_elements/test/dummy/widgets.py
index d3ca863e..76fdee7a 100644
--- a/src/fobi/contrib/plugins/form_elements/test/dummy/widgets.py
+++ b/src/fobi/contrib/plugins/form_elements/test/dummy/widgets.py
@@ -1,15 +1,15 @@
+from fobi.base import FormElementPluginWidget
+
+from . import UID
+
 __title__ = 'fobi.contrib.plugins.form_elements.test.dummy.widgets'
 __author__ = 'Artur Barseghyan <artur.barseghyan@gmail.com>'
 __copyright__ = '2014-2016 Artur Barseghyan'
 __license__ = 'GPL 2.0/LGPL 2.1'
 __all__ = ('BaseDummyPluginWidget',)
 
-from fobi.base import FormElementPluginWidget
-
-from . import UID
 
 class BaseDummyPluginWidget(FormElementPluginWidget):
-    """
-    Base dummy form element plugin widget.
-    """
+    """Base dummy form element plugin widget."""
+
     plugin_uid = UID