diff --git a/plinth/modules/config/forms.py b/plinth/modules/config/forms.py
index 8a6a9b232..21eef1235 100644
--- a/plinth/modules/config/forms.py
+++ b/plinth/modules/config/forms.py
@@ -24,15 +24,11 @@ from django import forms
 from django.utils.translation import ugettext as _, ugettext_lazy
 from django.core import validators
 from django.core.exceptions import ValidationError
-from django.conf import settings
-from django.utils import translation
 
 from plinth import cfg
 from plinth.utils import format_lazy
 
-import plinth
 import logging
-import os
 import re
 
 logger = logging.getLogger(__name__)
diff --git a/plinth/modules/diaspora/forms.py b/plinth/modules/diaspora/forms.py
index 228ac73a1..3adb0e261 100644
--- a/plinth/modules/diaspora/forms.py
+++ b/plinth/modules/diaspora/forms.py
@@ -21,7 +21,6 @@ Forms for configuring diaspora*
 from django import forms
 from django.utils.translation import ugettext_lazy as _
 
-from plinth import utils
 from plinth.forms import ServiceForm
 
 
diff --git a/plinth/modules/storage/views.py b/plinth/modules/storage/views.py
index 4790e4571..b3738cbf5 100644
--- a/plinth/modules/storage/views.py
+++ b/plinth/modules/storage/views.py
@@ -92,7 +92,6 @@ def warn_about_low_disk_space(request):
         return
 
     percent_used = list_root[0]['percent_used']
-    size_bytes = list_root[0]['size']
     free_bytes = list_root[0]['free']
     free_gib = free_bytes / (1024**3)
 
diff --git a/plinth/network.py b/plinth/network.py
index d8b0759c5..a5048444a 100644
--- a/plinth/network.py
+++ b/plinth/network.py
@@ -24,7 +24,6 @@ from django.utils.translation import ugettext_lazy as _
 import logging
 import socket
 import struct
-import subprocess
 import uuid
 
 from plinth.utils import import_from_gi