diff --git a/guides/bug_report_templates/active_record_gem.rb b/guides/bug_report_templates/active_record_gem.rb
index 63fbe27aed..a8868a1877 100644
--- a/guides/bug_report_templates/active_record_gem.rb
+++ b/guides/bug_report_templates/active_record_gem.rb
@@ -25,7 +25,7 @@ class Comment < ActiveRecord::Base
   belongs_to :post
 end
 
-class BugTest < Minitest::Test
+class BugTest < MiniTest::Unit::TestCase
   def test_association_stuff
     post = Post.create!
     post.comments << Comment.create!