diff --git a/Lib/timeit.py b/Lib/timeit.py
index e4d0e50e01a..9870954dfe6 100644
--- a/Lib/timeit.py
+++ b/Lib/timeit.py
@@ -1,3 +1,5 @@
+#! /usr/bin/env python
+
 """Tool for measuring execution time of small code snippets.
 
 This module avoids a number of common traps for measuring execution