diff --git a/nanovna-saver.py b/nanovna-saver.py
old mode 100644
new mode 100755
index 4ae2ec6..f76c875
--- a/nanovna-saver.py
+++ b/nanovna-saver.py
@@ -1,3 +1,4 @@
+#! /usr/bin/env python3
 #  NanoVNASaver - a python program to view and export Touchstone data from a NanoVNA
 #  Copyright (C) 2019.  Rune B. Broberg
 #