diff --git a/guides/source/rails_on_rack.md b/guides/source/rails_on_rack.md
index 993cd5ac44..3c9da6f723 100644
--- a/guides/source/rails_on_rack.md
+++ b/guides/source/rails_on_rack.md
@@ -329,8 +329,6 @@ Resources
 
 * [Official Rack Website](http://rack.github.io)
 * [Introducing Rack](http://chneukirchen.org/blog/archive/2007/02/introducing-rack.html)
-* [Ruby on Rack #1 - Hello Rack!](http://m.onkey.org/ruby-on-rack-1-hello-rack)
-* [Ruby on Rack #2 - The Builder](http://m.onkey.org/ruby-on-rack-2-the-builder)
 
 ### Understanding Middlewares