diff --git a/Tests/32bit_overflow_check.py b/Tests/32bit_overflow_check.py
index dfe1371f1..3001fec37 100644
--- a/Tests/32bit_overflow_check.py
+++ b/Tests/32bit_overflow_check.py
@@ -1,3 +1,5 @@
+#!/usr/bin/env python
+
 from PIL import Image
 import sys