diff --git a/Python script/VNA.py b/Python script/VNA.py
old mode 100644
new mode 100755
index be86a4ed9fc0f904902ac1884256c69814ac8616..ff8729426f9d98e3e15646174d6a615746da6dde
--- a/Python script/VNA.py	
+++ b/Python script/VNA.py	
@@ -1,3 +1,5 @@
+#!/usr/bin/python3
+
 import pyvisa
 import time