diff --git a/site_ansto/instrument/util/gen_sct.py b/site_ansto/instrument/util/gen_sct.py
old mode 100644
new mode 100755
index 5d93ceb6..4413d349
--- a/site_ansto/instrument/util/gen_sct.py
+++ b/site_ansto/instrument/util/gen_sct.py
@@ -1,3 +1,4 @@
+#!/usr/bin/env python
 # Script Context Driver Generator
 # vim: ft=python ts=8 sts=2 sw=2 expandtab autoindent smartindent
 #