diff --git a/Tools/autotest/apmrover2.py b/Tools/autotest/apmrover2.py
index 9693dda9b0..10550f49d3 100644
--- a/Tools/autotest/apmrover2.py
+++ b/Tools/autotest/apmrover2.py
@@ -1,4 +1,6 @@
-# drive APMrover2 in SITL
+#!/usr/bin/env python
+
+# Drive APMrover2 in SITL
 from __future__ import print_function
 import os
 import shutil
diff --git a/Tools/autotest/arducopter.py b/Tools/autotest/arducopter.py
index 8afd973748..1cd2950763 100644
--- a/Tools/autotest/arducopter.py
+++ b/Tools/autotest/arducopter.py
@@ -1,11 +1,6 @@
-# fly ArduCopter in SITL
-# Flight mode switch positions are set-up in arducopter.param to be
-#   switch 1 = Circle
-#   switch 2 = Land
-#   switch 3 = RTL
-#   switch 4 = Auto
-#   switch 5 = Loiter
-#   switch 6 = Stabilize
+#!/usr/bin/env python
+
+# Fly ArduCopter in SITL
 from __future__ import print_function
 import math
 import os
diff --git a/Tools/autotest/arduplane.py b/Tools/autotest/arduplane.py
index d7502b493a..f809a369c0 100644
--- a/Tools/autotest/arduplane.py
+++ b/Tools/autotest/arduplane.py
@@ -1,3 +1,5 @@
+#!/usr/bin/env python
+
 # Fly ArduPlane in SITL
 from __future__ import print_function
 import math
diff --git a/Tools/autotest/ardusub.py b/Tools/autotest/ardusub.py
index a80a485ace..2107d8b40e 100644
--- a/Tools/autotest/ardusub.py
+++ b/Tools/autotest/ardusub.py
@@ -1,4 +1,6 @@
-# drive APMrover2 in SITL
+#!/usr/bin/env python
+
+# Dive ArduSub in SITL
 from __future__ import print_function
 import os
 import shutil
diff --git a/Tools/autotest/quadplane.py b/Tools/autotest/quadplane.py
index e53b243d8d..818ff65e6f 100644
--- a/Tools/autotest/quadplane.py
+++ b/Tools/autotest/quadplane.py
@@ -1,4 +1,6 @@
-# fly ArduPlane QuadPlane in SITL
+#!/usr/bin/env python
+
+# Fly ArduPlane QuadPlane in SITL
 from __future__ import print_function
 import os
 import pexpect