diff --git a/src/SluDelayCalculator.py b/src/SluDelayCalculator.py
index 0f802183447e4029de7495b9e7372fb85c365edb..34ac444eda6b7de43ea0b876e61ae52e7ac6a244 100644
--- a/src/SluDelayCalculator.py
+++ b/src/SluDelayCalculator.py
@@ -1,4 +1,5 @@
-#!/usr/bin/python3
+#!/usr/bin/env python3
+# -*- coding:utf-8 -*-
 
 
 import PyTango