diff --git a/ORStools/common/client.py b/ORStools/common/client.py
index 8a0b6afb..042f3afe 100644
--- a/ORStools/common/client.py
+++ b/ORStools/common/client.py
@@ -245,7 +245,7 @@ def _generate_auth_url(self, path, params):
         :rtype: string
         """
 
-        if type(params) is dict:
+        if isinstance(params, dict):
             params = sorted(dict(**params).items())
 
         # Only auto-add API key when using ORS. If own instance, API key must
diff --git a/ORStools/common/networkaccessmanager.py b/ORStools/common/networkaccessmanager.py
index 8ae126ae..cb9197da 100644
--- a/ORStools/common/networkaccessmanager.py
+++ b/ORStools/common/networkaccessmanager.py
@@ -26,10 +26,13 @@
 
 import re
 import io
-import urllib.request, urllib.error, urllib.parse
+import urllib.parse
 
-from qgis.PyQt.QtCore import QUrl, QEventLoop
-from qgis.PyQt.QtNetwork import QNetworkRequest, QNetworkReply
+from qgis.PyQt.QtCore import (QUrl,
+                              QEventLoop)
+
+from qgis.PyQt.QtNetwork import (QNetworkRequest,
+                                 QNetworkReply)
 
 from qgis.core import (
     QgsApplication,
diff --git a/ORStools/gui/ORStoolsDialog.py b/ORStools/gui/ORStoolsDialog.py
index 849a2a1c..2ed30e14 100644
--- a/ORStools/gui/ORStoolsDialog.py
+++ b/ORStools/gui/ORStoolsDialog.py
@@ -55,7 +55,6 @@
 from ORStools.utils import exceptions, maptools, logger, configmanager, transform
 from .ORStoolsDialogConfig import ORStoolsDialogConfigMain
 from .ORStoolsDialogUI import Ui_ORStoolsDialogBase
-from . import resources_rc
 
 
 def on_config_click(parent):