diff --git a/actuasim.py b/actuasim.py
index 0df73ecfd64b351c6f7def87934ceceedf57f86d..42feb4c24ba092f7c857f1443fe9c74a26962a69 100755
--- a/actuasim.py
+++ b/actuasim.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 # -*- coding: utf-8 -*-
 
 import json