/usr/local/bin/python -> /usr/bin/env python
diff --git a/Demo/tkinter/guido/MimeViewer.py b/Demo/tkinter/guido/MimeViewer.py
index 06b7a88..2b98579 100755
--- a/Demo/tkinter/guido/MimeViewer.py
+++ b/Demo/tkinter/guido/MimeViewer.py
@@ -1,4 +1,4 @@
-#! /usr/local/bin/python
+#! /usr/bin/env python
 
 # View a single MIME multipart message.
 # Display each part as a box.