Index: easy_install.py
===================================================================
--- easy_install.py	(revision 110703)
+++ easy_install.py	(working copy)
@@ -1063,7 +1063,7 @@
     generated.append(dest)
     return generated
 
-if is_jython and jython_os_name == 'linux':
+if is_jython and jython_os_name in ('mac os x', 'linux'):
     script_header = '#!/usr/bin/env %(python)s'
 else:
     script_header = '#!%(python)s'