diff -U 3 -dHrN -- a/mygnuhealth/about.py b/mygnuhealth/about.py
--- a/mygnuhealth/about.py	2021-04-27 01:05:15.000000000 +0200
+++ b/mygnuhealth/about.py	2021-04-29 16:37:17.525630184 +0200
@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/python3
 ####################################################################
 #   Copyright (C) 2020-2021 Luis Falcon <falcon@gnuhealth.org>
 #   Copyright (C) 2020-2021 GNU Solidario <health@gnusolidario.org>
diff -U 3 -dHrN -- a/mygnuhealth/core.py b/mygnuhealth/core.py
--- a/mygnuhealth/core.py	2021-04-19 21:56:29.000000000 +0200
+++ b/mygnuhealth/core.py	2021-04-29 16:37:17.533630154 +0200
@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/python3
 ##############################################################################
 #
 #    MyGNUHealth : Mobile and Desktop PHR node for GNU Health
diff -U 3 -dHrN -- a/mygnuhealth/credits.py b/mygnuhealth/credits.py
--- a/mygnuhealth/credits.py	2021-04-19 21:56:29.000000000 +0200
+++ b/mygnuhealth/credits.py	2021-04-29 16:37:17.533630154 +0200
@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/python3
 ####################################################################
 #   Copyright (C) 2020-2021 Luis Falcon <falcon@gnuhealth.org>
 #   Copyright (C) 2020-2021 GNU Solidario <health@gnusolidario.org>
diff -U 3 -dHrN -- a/mygnuhealth/mygh.py b/mygnuhealth/mygh.py
--- a/mygnuhealth/mygh.py	2021-04-19 21:56:29.000000000 +0200
+++ b/mygnuhealth/mygh.py	2021-04-29 16:37:17.537630140 +0200
@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/python3
 ##############################################################################
 #
 #    MyGNUHealth : Mobile and Desktop PHR node for GNU Health
diff -U 3 -dHrN -- a/setup.py b/setup.py
--- a/setup.py	2021-04-18 23:56:30.000000000 +0200
+++ b/setup.py	2021-04-29 16:37:17.549630096 +0200
@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/python3
 # This file if part of the MyGNUHealth, the GNU Health PHR
 # www.gnuhealth.org