diff --git a/launch.py b/launch.py
index d7a031d93..68e4680e0 100755
--- a/launch.py
+++ b/launch.py
@@ -1,4 +1,4 @@
-#!/usr/bin/python3 -OO
+#!/usr/bin/env python3
 
 import os
 import sys
diff --git a/scripts/gajim b/scripts/gajim
index f2af444c5..47f28512e 100644
--- a/scripts/gajim
+++ b/scripts/gajim
@@ -1,4 +1,4 @@
-#!/usr/bin/python3 -OO
+#!/usr/bin/env python3
 ##
 ## Copyright (C) 2005 Yann Le Boulanger <asterix AT lagaule.org>
 ## Copyright (C) 2006 Dimitur Kirov <dkirov AT gmail.com>
diff --git a/scripts/gajim-history-manager b/scripts/gajim-history-manager
index 2466a70c3..cbf3cb4fc 100644
--- a/scripts/gajim-history-manager
+++ b/scripts/gajim-history-manager
@@ -1,4 +1,4 @@
-#!/usr/bin/python3 -OO
+#!/usr/bin/env python3
 ##
 ## Copyright (C) 2005 Yann Le Boulanger <asterix AT lagaule.org>
 ## Copyright (C) 2006 Dimitur Kirov <dkirov AT gmail.com>
diff --git a/scripts/gajim-remote b/scripts/gajim-remote
index 81ce64ace..624596878 100644
--- a/scripts/gajim-remote
+++ b/scripts/gajim-remote
@@ -1,4 +1,4 @@
-#!/usr/bin/python3 -OO
+#!/usr/bin/env python3
 ##
 ## Copyright (C) 2005 Yann Le Boulanger <asterix AT lagaule.org>
 ## Copyright (C) 2006 Dimitur Kirov <dkirov AT gmail.com>