diff --git a/Lib/doctest.py b/Lib/doctest.py
index 47b3aae..1560a18 100644
--- a/Lib/doctest.py
+++ b/Lib/doctest.py
@@ -95,7 +95,7 @@
 
 import __future__
 
-import sys, traceback, inspect, linecache, os, re, types
+import sys, traceback, inspect, linecache, os, re
 import unittest, difflib, pdb, tempfile
 import warnings
 from StringIO import StringIO