diff --git a/patool b/patool
index 8120267..6db42d8 100755
--- a/patool
+++ b/patool
@@ -18,6 +18,7 @@
 patool [extract|list|create|formats] [sub-command-options] <command-args>
 """
 import os
+import sys
 from patoolib import handle_archive, list_formats, baker
 
 # parameter help and short options