diff --git a/activerecord/test/cases/i18n_test.rb b/activerecord/test/cases/i18n_test.rb
index 9f934ab569..06036733f5 100644
--- a/activerecord/test/cases/i18n_test.rb
+++ b/activerecord/test/cases/i18n_test.rb
@@ -40,7 +40,7 @@ class ActiveRecordI18nTests < Test::Unit::TestCase
 
   private
     def reset_translations
-      I18n.backend = I18n::Backend::Simple
+      I18n.backend = I18n::Backend::Simple.new
     end
 end