/usr/local/bin/python -> /usr/bin/env python
diff --git a/Demo/scripts/unbirthday.py b/Demo/scripts/unbirthday.py
index cb018b6..2c515c4 100755
--- a/Demo/scripts/unbirthday.py
+++ b/Demo/scripts/unbirthday.py
@@ -1,4 +1,4 @@
-#! /usr/local/bin/python
+#! /usr/bin/env python
 
 # Calculate your unbirthday count (see Alice in Wonderland).
 # This is defined as the number of days from your birth until today