diff --git a/src/Mod/Mesh/App/MeshTestsApp.py b/src/Mod/Mesh/App/MeshTestsApp.py
index 2dd450a489..b8e7fa0623 100644
--- a/src/Mod/Mesh/App/MeshTestsApp.py
+++ b/src/Mod/Mesh/App/MeshTestsApp.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 # -*- coding: utf-8 -*-
 
 #  Copyright (c) 2007 Jürgen Riegel <juergen.riegel@web.de>
diff --git a/src/Mod/Robot/KukaExporter.py b/src/Mod/Robot/KukaExporter.py
index 72f72ab799..62fd5f1f83 100644
--- a/src/Mod/Robot/KukaExporter.py
+++ b/src/Mod/Robot/KukaExporter.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 # -*- coding: utf-8 -*-
 
 # Kuka export lib (c) Jürgen Riegel 2009 LGPL 2.1 or higher
diff --git a/src/Mod/Robot/MovieTool.py b/src/Mod/Robot/MovieTool.py
index 8bd2a513c1..a9a101b612 100644
--- a/src/Mod/Robot/MovieTool.py
+++ b/src/Mod/Robot/MovieTool.py
@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/python3
 import os,sys,string
 import FreeCAD,FreeCADGui,Robot,RobotGui