/usr/local/bin/python -> /usr/bin/env python
diff --git a/Demo/sgi/gl/mixing.py b/Demo/sgi/gl/mixing.py
index 57dea9c..9a4c9c1 100755
--- a/Demo/sgi/gl/mixing.py
+++ b/Demo/sgi/gl/mixing.py
@@ -1,4 +1,4 @@
-#! /usr/local/bin/python
+#! /usr/bin/env python
 
 # Use Gouraud shading to mix colors.  Requires Z-buffer.
 # It changes the color assignments so fast that you see white.