diff -r faef1da30c6d Tools/msi/msi.py
--- a/Tools/msi/msi.py	Wed May 07 04:41:26 2014 +0200
+++ b/Tools/msi/msi.py	Sat May 10 07:53:29 2014 -0700
@@ -1034,6 +1034,7 @@
             lib.add_file("idle.bat")
         if dir=="Icons":
             lib.glob("*.gif")
+            lib.glob("*.ico")
             lib.add_file("idle.icns")
         if dir=="command" and parent.physical=="distutils":
             lib.glob("wininst*.exe")