diff --git a/spec/khipu_rails_spec.rb b/spec/khipu_rails_spec.rb
index <HASH>..<HASH> 100644
--- a/spec/khipu_rails_spec.rb
+++ b/spec/khipu_rails_spec.rb
@@ -3,6 +3,6 @@ require 'spec_helper'
 
 describe KhipuRails do
   it "adds the khipu_button helper to the view" do
-    ActionView::Base.method_defined? :khipu_button
+    ActionView::Base.method_defined?(:khipu_button).should == true
   end
 end
Fixed the test that checks the helper addition.