Syntax error causing ruby koans success

gistfile1.txt

$ git diff
diff --git a/koans/about_asserts.rb b/koans/about_asserts.rb
index e1c34d4..bf19c21 100644
--- a/koans/about_asserts.rb
+++ b/koans/about_asserts.rb
@@ -3,7 +3,7 @@
 
 require File.expand_path(File.dirname(__FILE__) + '/edgecase')
 
-class AboutAsserts < EdgeCase::Koan
+class AboutAsserts < EdgeCase::Koan <
 
   # We shall contemplate truth by testing reality, via asserts.
   def test_assert_truth
 

$ rake
(in /home/tjkirch/code/ruby/ruby_koans/koans)
/home/tjkirch/.rvm/rubies/ruby-1.9.2-p180/bin/ruby path_to_enlightenment.rb
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   :::,,,::::::                                                   ::::::::::::
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:::::::::::::                                                     ,::::::::::::
::::::::::::                      Ruby Koans                       ::::::::::::,
::::::::::::                   (in Ruby 1.9.2)                    ,::::::::::::,
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/home/tjkirch/code/ruby/ruby_koans/koans/about_asserts.rb:11:in `<': compared with non class/module (TypeError)
	from /home/tjkirch/code/ruby/ruby_koans/koans/about_asserts.rb:11:in `<top (required)>'
	from <internal:lib/rubygems/custom_require>:29:in `require'
	from <internal:lib/rubygems/custom_require>:29:in `require'
	from path_to_enlightenment.rb:5:in `<main>'
rake aborted!
Command failed with status (1): [/home/tjkirch/.rvm/rubies/ruby-1.9.2-p180/...]
/home/tjkirch/code/ruby/ruby_koans/koans/Rakefile:10:in `block in <top (required)>'
(See full trace by running task with --trace)