diff --git a/tperimeter.py b/tperimeter.py
index ef7d066..d4ce5a2 100644
--- a/tperimeter.py
+++ b/tperimeter.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/local/bin/python
 # tperimeter.py
 # Copyright (c) 2006-2020 TundraWare Inc.  All Rights Reserved.
 # For Updates See:  http://www.tundraware.com/Software/tperimeter