diff --git a/activerecord/lib/active_record.rb b/activerecord/lib/active_record.rb
index 2463f3951f..77971973f6 100644
--- a/activerecord/lib/active_record.rb
+++ b/activerecord/lib/active_record.rb
@@ -105,7 +105,6 @@ module ActiveRecord
       autoload :TimeZoneConversion
       autoload :Write
       autoload :Serialization
-      autoload :DeprecatedUnderscoreRead
     end
   end