diff --git a/test_curves.py b/test_curves.py
index 669a425dd1..f5396fa37a 100755
--- a/test_curves.py
+++ b/test_curves.py
@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/py.test
 import ctypes as c
 import curve25519
 import random