diff --git a/16-dataspaces/tf-16.py b/16-dataspaces/tf-16.py
index bbce10e..991f9b4 100755
--- a/16-dataspaces/tf-16.py
+++ b/16-dataspaces/tf-16.py
@@ -1,3 +1,4 @@
+#!/usr/bin/env python
 import re, sys, operator, Queue, threading
 
 # Two data spaces