diff --git a/tests/regress/hook_code_stop_emu.py b/tests/regress/hook_code_stop_emu.py
old mode 100644
new mode 100755
index 55d4ea68..33f2f8fa
--- a/tests/regress/hook_code_stop_emu.py
+++ b/tests/regress/hook_code_stop_emu.py
@@ -1,3 +1,5 @@
+#!/usr/bin/python
+
 from __future__ import print_function
 import binascii
 import regress