diff --git a/source/app/controllers/conf.py.example b/source/app/controllers/conf.py.example
index 5da41e8..2a015b5 100644
--- a/source/app/controllers/conf.py.example
+++ b/source/app/controllers/conf.py.example
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 
 DEBUG = False
diff --git a/source/app/controllers/configpac.py b/source/app/controllers/configpac.py
index 9e0cae1..814fefa 100644
--- a/source/app/controllers/configpac.py
+++ b/source/app/controllers/configpac.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 
 from .conf import DEBUG, ID_INTEGRADOR, FINKOK
diff --git a/source/app/controllers/pac.py b/source/app/controllers/pac.py
index 248c351..6add3bc 100644
--- a/source/app/controllers/pac.py
+++ b/source/app/controllers/pac.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 #~ import re
 #~ from xml.etree import ElementTree as ET
diff --git a/source/app/controllers/util.py b/source/app/controllers/util.py
index 271f9ec..146128f 100644
--- a/source/app/controllers/util.py
+++ b/source/app/controllers/util.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 # ~ Empresa Libre
 # ~ Copyright (C) 2016-2018  Mauricio Baeza Servin (web@correolibre.net)