diff --git a/examples/example1.py b/examples/example1.py
index 5640313..d550107 100644
--- a/examples/example1.py
+++ b/examples/example1.py
@@ -1,3 +1,5 @@
+#!/bin/env python
+
 import calfem.geometry as cfg
 import calfem.mesh as cfm
 import calfem.vis_mpl as cfv