diff --git a/find_reduced.py b/find_reduced.py
index f3125b8..73fab3d 100755
--- a/find_reduced.py
+++ b/find_reduced.py
@@ -4,6 +4,7 @@ import sys
 
 if len(sys.argv) != 2:
     print "usage: %s /path/to/Sources.bz"%sys.argv[0]
+    exit(0)
 
 import os
 from os import path