diff --git a/tests/test_plugins/test_runroot_cli.py b/tests/test_plugins/test_runroot_cli.py
index ecf6606e..b002cc70 100644
--- a/tests/test_plugins/test_runroot_cli.py
+++ b/tests/test_plugins/test_runroot_cli.py
@@ -2,7 +2,6 @@ from __future__ import absolute_import
 import io
 import mock
 import six
-import threading
 try:
     import unittest2 as unittest
 except ImportError: