diff --git a/qt/python/mantidqt/utils/test/test_writetosignal.py b/qt/python/mantidqt/utils/test/test_writetosignal.py
index 9ed5c57f79a56d54d63021b1f5e02a49b1b021c9..61d121e483a3196e8df98b98458798ec1f6d4707 100644
--- a/qt/python/mantidqt/utils/test/test_writetosignal.py
+++ b/qt/python/mantidqt/utils/test/test_writetosignal.py
@@ -9,14 +9,12 @@
 #
 from __future__ import (absolute_import)
 
-# std imports
 import unittest
 
-# 3rdparty
+import sys
 from mock import patch
 from qtpy.QtCore import QCoreApplication, QObject
 
-# local imports
 from mantidqt.utils.qt.test import GuiTest
 from mantidqt.utils.writetosignal import WriteToSignal