diff --git a/demo/python/cmd.py b/demo/python/cmd.py
index 739311b..b970ef0 100755
--- a/demo/python/cmd.py
+++ b/demo/python/cmd.py
@@ -1,3 +1,4 @@
+#!/usr/bin/env python
 ## It emulates the program "cmd" which is distributed with
 ## the comedilib software
 ## Copyright (C) May 2003  Luc Lefebvre
diff --git a/demo/python/mmap.py b/demo/python/mmap.py
index 00c9623..786f8eb 100755
--- a/demo/python/mmap.py
+++ b/demo/python/mmap.py
@@ -1,3 +1,4 @@
+#!/usr/bin/env python
 ## A test-application to demonstrate using the Comedilib API
 ##  and streaming acquisition in particular, from Python.