diff --git a/certbot/plugins/util_test.py b/certbot/plugins/util_test.py
index e1a064fb3..63a472fa0 100644
--- a/certbot/plugins/util_test.py
+++ b/certbot/plugins/util_test.py
@@ -4,13 +4,7 @@ import unittest
 import sys
 
 import mock
-
-try:
-    # Python 3.5+
-    from importlib import reload as refresh  # pylint: disable=no-name-in-module
-except ImportError:
-    # Python 2-3.4
-    from imp import reload as refresh
+from six.moves import reload_module  # pylint: disable=import-error
 
 
 class PathSurgeryTest(unittest.TestCase):
@@ -50,14 +44,14 @@ class AlreadyListeningTestNoPsutil(unittest.TestCase):
         sys.modules['psutil'] = None
         # Reload hackery to ensure getting non-psutil version
         # loaded to memory
-        refresh(certbot.plugins.util)
+        reload_module(certbot.plugins.util)
 
     def tearDown(self):
         # Need to reload the module to ensure
         # getting back to normal
         import certbot.plugins.util
         sys.modules["psutil"] = self.psutil
-        refresh(certbot.plugins.util)
+        reload_module(certbot.plugins.util)
 
     @mock.patch("certbot.plugins.util.zope.component.getUtility")
     def test_ports_available(self, mock_getutil):