normalize shebang lines to #!/usr/bin/env python
diff --git a/Mac/BuildScript/build-installer.py b/Mac/BuildScript/build-installer.py
index dbb968e..14a3a8e 100755
--- a/Mac/BuildScript/build-installer.py
+++ b/Mac/BuildScript/build-installer.py
@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python
 """
 This script is used to build the "official unofficial" universal build on
 Mac OS X. It requires Mac OS X 10.4, Xcode 2.2 and the 10.4u SDK to do its