diff --git a/crosperf/crosperf.py b/crosperf/crosperf.py
index 6b00cf7..e874277 100755
--- a/crosperf/crosperf.py
+++ b/crosperf/crosperf.py
@@ -15,6 +15,10 @@
 from experiment_factory import ExperimentFactory
 from experiment_file import ExperimentFile
 from settings_factory import GlobalSettings
+
+# This import causes pylint to warn about "No name 'logger' in module 'utils'".
+# I do not understand why. The import works fine in python.
+# pylint: disable=no-name-in-module
 from utils import logger
 
 import test_flag
diff --git a/crosperf/suite_runner.py b/crosperf/suite_runner.py
index b7b26bf..b0b4c3a 100644
--- a/crosperf/suite_runner.py
+++ b/crosperf/suite_runner.py
@@ -1,4 +1,3 @@
-
 # Copyright (c) 2013~2015 The Chromium OS Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
diff --git a/utils/buildbot_json.py b/utils/buildbot_json.py
index 3800b90..693a42c 100755
--- a/utils/buildbot_json.py
+++ b/utils/buildbot_json.py
@@ -40,8 +40,15 @@
 import datetime
 import functools
 import json
+
+# Pylint recommends we use "from chromite.lib import cros_logging as logging".
+# Chromite specific policy message, we want to keep using the standard logging.
+# pylint: disable=cros-logging-import
 import logging
+
+# pylint: disable=deprecated-module
 import optparse
+
 import time
 import urllib
 import urllib2
diff --git a/utils/misc.py b/utils/misc.py
index 1ffd235..ae234fe 100644
--- a/utils/misc.py
+++ b/utils/misc.py
@@ -470,6 +470,9 @@
 
   ### First of all, we need chromite libs
   sys.path.append(os.path.join(chromeos_root, 'chromite'))
+  # Imports below are ok after modifying path to add chromite.
+  # Pylint cannot detect that and complains.
+  # pylint: disable=import-error
   from lib import git
   from lib import gerrit
   manifest = git.ManifestCheckout(chromeos_root)
@@ -541,7 +544,8 @@
     except KeyboardInterrupt:
       # If the user hits CTRL+C, just exit the process.
       print()
-      Die('CTRL+C detected; exiting')
+      print('CTRL+C detected; exiting')
+      sys.exit()
 
     if not response:
       return default