diff --git a/test/unit/lib/redmine/wiki_formatting/textile_formatter_test.rb b/test/unit/lib/redmine/wiki_formatting/textile_formatter_test.rb
index fa5f8adb4..7314d4880 100644
--- a/test/unit/lib/redmine/wiki_formatting/textile_formatter_test.rb
+++ b/test/unit/lib/redmine/wiki_formatting/textile_formatter_test.rb
@@ -17,7 +17,7 @@
 
 require File.expand_path('../../../../../test_helper', __FILE__)
 
-class Redmine::WikiFormatting::TextileFormatterTest < HelperTestCase
+class Redmine::WikiFormatting::TextileFormatterTest < ActionView::TestCase
 
   def setup
     @formatter = Redmine::WikiFormatting::Textile::Formatter