diff --git a/IPython/Extensions/astyle.py b/IPython/Extensions/astyle.py
index f488de1..fa2042e 100644
--- a/IPython/Extensions/astyle.py
+++ b/IPython/Extensions/astyle.py
@@ -4,7 +4,7 @@ bold; blink; etc.) to terminal and curses output.
 """
 
 
-import os
+import sys, os
 
 try:
     import curses