diff --git a/vc_zoom/indico_vc_zoom/api/__init__.py b/vc_zoom/indico_vc_zoom/api/__init__.py
index 28dc103..035dd7c 100644
--- a/vc_zoom/indico_vc_zoom/api/__init__.py
+++ b/vc_zoom/indico_vc_zoom/api/__init__.py
@@ -5,7 +5,7 @@
 # them and/or modify them under the terms of the MIT License;
 # see the LICENSE file for more details.
 
-from .client import ZoomIndicoClient, ZoomClient
+from .client import ZoomClient, ZoomIndicoClient
 
 
 __all__ = ['ZoomIndicoClient', 'ZoomClient']
diff --git a/vc_zoom/indico_vc_zoom/api/client.py b/vc_zoom/indico_vc_zoom/api/client.py
index 6b3da45..ad223c3 100644
--- a/vc_zoom/indico_vc_zoom/api/client.py
+++ b/vc_zoom/indico_vc_zoom/api/client.py
@@ -10,9 +10,9 @@ from __future__ import absolute_import, unicode_literals
 import time
 
 import jwt
+from pytz import utc
 from requests import Session
 from requests.exceptions import HTTPError
-from pytz import utc
 
 
 def format_iso_dt(d):
diff --git a/vc_zoom/indico_vc_zoom/controllers.py b/vc_zoom/indico_vc_zoom/controllers.py
index b099a5f..86fddce 100644
--- a/vc_zoom/indico_vc_zoom/controllers.py
+++ b/vc_zoom/indico_vc_zoom/controllers.py
@@ -12,21 +12,21 @@ from flask_pluginengine import current_plugin
 from sqlalchemy.orm.attributes import flag_modified
 from webargs import fields
 from webargs.flaskparser import use_kwargs
+from werkzeug.exceptions import Forbidden
 
 from indico.core.db import db
 from indico.modules.vc.controllers import RHVCSystemEventBase
 from indico.modules.vc.exceptions import VCRoomError
 from indico.modules.vc.models.vc_rooms import VCRoom
-from indico.web.rh import RH
 from indico.util.i18n import _
-from werkzeug.exceptions import Forbidden
+from indico.web.rh import RH
 
 
 class RHRoomAlternativeHost(RHVCSystemEventBase):
     def _process(self):
         new_identifier = session.user.identifier
         if new_identifier == self.vc_room.data['host'] or new_identifier in self.vc_room.data['alternative_hosts']:
-            flash(_("You were already an (alternative) host of this meeting"), 'warning')
+            flash(_('You were already an (alternative) host of this meeting'), 'warning')
             return jsonify(success=False)
 
         self.vc_room.data['alternative_hosts'].append(new_identifier)
diff --git a/vc_zoom/indico_vc_zoom/forms.py b/vc_zoom/indico_vc_zoom/forms.py
index 0dd0f50..75a0289 100644
--- a/vc_zoom/indico_vc_zoom/forms.py
+++ b/vc_zoom/indico_vc_zoom/forms.py
@@ -6,9 +6,9 @@
 # see the LICENSE file for more details.
 
 from __future__ import unicode_literals
+
 from flask import session
 from flask_pluginengine import current_plugin
-
 from wtforms.fields.core import BooleanField, StringField
 from wtforms.fields.simple import TextAreaField
 from wtforms.validators import DataRequired, ValidationError
diff --git a/vc_zoom/indico_vc_zoom/notifications.py b/vc_zoom/indico_vc_zoom/notifications.py
index 87a1b14..0e58d85 100644
--- a/vc_zoom/indico_vc_zoom/notifications.py
+++ b/vc_zoom/indico_vc_zoom/notifications.py
@@ -7,9 +7,9 @@
 
 from __future__ import unicode_literals
 
-from indico.web.flask.templating import get_template_module
 from indico.core.notifications import make_email, send_email
 from indico.util.user import principal_from_identifier
+from indico.web.flask.templating import get_template_module
 
 
 def notify_host_start_url(vc_room):
diff --git a/vc_zoom/indico_vc_zoom/plugin.py b/vc_zoom/indico_vc_zoom/plugin.py
index 2bd5eec..b3f17d2 100644
--- a/vc_zoom/indico_vc_zoom/plugin.py
+++ b/vc_zoom/indico_vc_zoom/plugin.py
@@ -11,8 +11,8 @@ from flask import flash, session
 from markupsafe import escape
 from requests.exceptions import HTTPError
 from sqlalchemy.orm.attributes import flag_modified
-from wtforms.fields.core import BooleanField
 from wtforms.fields import TextAreaField
+from wtforms.fields.core import BooleanField
 from wtforms.fields.simple import StringField
 from wtforms.validators import DataRequired, ValidationError
 
@@ -35,9 +35,9 @@ from indico_vc_zoom.blueprint import blueprint
 from indico_vc_zoom.cli import cli
 from indico_vc_zoom.forms import VCRoomAttachForm, VCRoomForm
 from indico_vc_zoom.notifications import notify_host_start_url
-from indico_vc_zoom.util import (UserLookupMode, fetch_zoom_meeting, find_enterprise_email, gen_random_password,
-                                 get_alt_host_emails, get_schedule_args, get_url_data_args, process_alternative_hosts,
-                                 update_zoom_meeting, ZoomMeetingType)
+from indico_vc_zoom.util import (UserLookupMode, ZoomMeetingType, fetch_zoom_meeting, find_enterprise_email,
+                                 gen_random_password, get_alt_host_emails, get_schedule_args, get_url_data_args,
+                                 process_alternative_hosts, update_zoom_meeting)
 
 
 class PluginSettingsForm(VCPluginSettingsFormBase):