diff --git a/configure_indicator.py b/configure_indicator.py
index 6a75cc4..9b194dd 100644
--- a/configure_indicator.py
+++ b/configure_indicator.py
@@ -1,6 +1,8 @@
 #!/usr/bin/python3
+"""Configuration script for location indicator system monitor."""
 import os
 import shutil
+import sys
 from sys import argv
 
 install_path = None
@@ -9,11 +11,11 @@
     install_path = argv[1]
 except IndexError:
     print('Please provide the script installation path as first argument')
-    exit(1)
+    sys.exit(1)
 finally:
     if install_path is None:
         print('Please provide the script installation path as first argument')
-        exit(1)
+        sys.exit(1)
 
 AUTOSTART_DIR = os.environ['HOME'] + '/.config/autostart'
 AUTOSTART_PATH = os.environ['HOME'] + '/.config/autostart/indicator-sysmonitor.desktop'
@@ -24,14 +26,19 @@
 
 shutil.copy(DESKTOP_PATH, AUTOSTART_PATH)
 
-exec(open('/usr/share/indicator-sysmonitor/sysmonitor_common/sensors.py').read())
-
+with open('/usr/share/indicator-sysmonitor/sysmonitor_common/sensors.py',
+          encoding='utf-8') as sensor_file:
+    exec(sensor_file.read())  # pylint: disable=exec-used
 
+# pylint: disable=undefined-variable
 mgr = SensorManager()
 mgr.update_regex()
-mgr.add('ip', 'Display current location IP address', install_path + "/get-location.sh ip")
-mgr.add('country_code', 'Display current location country ISO code', install_path + "/get-location.sh country_code")
-mgr.add('country_flag', 'Display current location country flag', install_path + "/get-location.sh country_flag")
+mgr.add('ip', 'Display current location IP address',
+        install_path + "/get-location.sh ip")
+mgr.add('country_code', 'Display current location country ISO code',
+        install_path + "/get-location.sh country_code")
+mgr.add('country_flag', 'Display current location country flag',
+        install_path + "/get-location.sh country_flag")
 mgr.set_custom_text('{country_flag}{country_code}, IP:{ip}')
 mgr.set_interval(15)
 mgr.settings['on_startup'] = True