diff --git a/koans/edgecase.rb b/koans/edgecase.rb
index 8d9646b..091dbda 100644
--- a/koans/edgecase.rb
+++ b/koans/edgecase.rb
@@ -2,7 +2,8 @@
 # -*- ruby -*-
 
 require 'test/unit/assertions'
-
+require 'rubygems'
+require 'win32console'
 # --------------------------------------------------------------------
 # Support code for the Ruby Koans.
 # --------------------------------------------------------------------