diff --git a/app/controllers/public/content_viewer_controller.rb b/app/controllers/public/content_viewer_controller.rb
index 8eb292a..59938a1 100644
--- a/app/controllers/public/content_viewer_controller.rb
+++ b/app/controllers/public/content_viewer_controller.rb
@@ -120,7 +120,7 @@ class ContentViewerController < ApplicationController
     end
   end
 
-  def self.versioning_articles(string1, string2)
+  def versioning_articles(string1, string2)
     Diffy::Diff.new('string1', 'string2').to_s(:html)
   end
 
diff --git a/test/functional/content_viewer_controller_test.rb b/test/functional/content_viewer_controller_test.rb
index 9e9784b..acbb2c9 100644
--- a/test/functional/content_viewer_controller_test.rb
+++ b/test/functional/content_viewer_controller_test.rb
@@ -1211,7 +1211,7 @@ class ContentViewerControllerTest < ActionController::TestCase
       :published => true,
       :body => "<p>That is a <strong>bold</strong> statement right there!</p>"
     )
-    ContentViewerController.versioning_articles('Post1','Post2')
+    @controller.versioning_articles('Post1','Post2')
   end
 
   should 'not display comments marked as spam' do
--
libgit2 0.21.2