1 files changed, 2 insertions, 3 deletions
diff --git a/activerecord/lib/active_record/connection_adapters/abstract_mysql_adapter.rb b/activerecord/lib/active_record/connection_adapters/abstract_mysql_adapter.rb
index 0a9e599c3c..84bfab43bb 100644
--- a/activerecord/lib/active_record/connection_adapters/abstract_mysql_adapter.rb
+++ b/activerecord/lib/active_record/connection_adapters/abstract_mysql_adapter.rb
@@ -942,9 +942,8 @@ module ActiveRecord
         end
       end
 
-      def type_classes_with_standard_constructor
-        super.merge(string: MysqlString)
-      end
+      ActiveRecord::Type.register(:string, MysqlString, adapter: :mysql)
+      ActiveRecord::Type.register(:string, MysqlString, adapter: :mysql2)
     end
   end
 end