diff --git a/Class001/pcvc001.py b/Class001/pcvc001.py
old mode 100644
new mode 100755
index ad12e14..60b26fb
--- a/Class001/pcvc001.py
+++ b/Class001/pcvc001.py
@@ -1,3 +1,4 @@
+#!/usr/bin/python3
 # coding=utf-8
 """
 Python OpenCV Class 001