diff --git a/IPython/core/tests/test_oinspect.py b/IPython/core/tests/test_oinspect.py
index 7e08f73..401f4be 100644
--- a/IPython/core/tests/test_oinspect.py
+++ b/IPython/core/tests/test_oinspect.py
@@ -16,6 +16,7 @@ from __future__ import print_function
 # Stdlib imports
 import os
 import re
+import sys
 
 # Third-party imports
 import nose.tools as nt