diff --git a/libraries/AP_InertialSensor/examples/coning.py b/libraries/AP_InertialSensor/examples/coning.py
index cd3bc0e857..7ce150965b 100755
--- a/libraries/AP_InertialSensor/examples/coning.py
+++ b/libraries/AP_InertialSensor/examples/coning.py
@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python
 
 from math import *
 from pymavlink.rotmat import Vector3, Matrix3