diff --git a/testing/IOR-tester.py b/testing/IOR-tester.py
index 4b0319f..3e05adf 100755
--- a/testing/IOR-tester.py
+++ b/testing/IOR-tester.py
@@ -1,4 +1,4 @@
-#!/usr/local/bin/python
+#!/usr/bin/env python
 #
 # Tester for IOR
 #