diff --git a/flask/config.py b/flask/config.py
index 920d4835..b276f168 100644
--- a/flask/config.py
+++ b/flask/config.py
@@ -13,7 +13,6 @@ from __future__ import with_statement
 
 import imp
 import os
-import sys
 import errno
 
 from werkzeug import import_string