diff --git a/lib/action_controller/serialization.rb b/lib/action_controller/serialization.rb
index 7b05084b..75cd0804 100644
--- a/lib/action_controller/serialization.rb
+++ b/lib/action_controller/serialization.rb
@@ -40,7 +40,7 @@ module ActionController
     def default_serializer_options
     end
 
-    %i(_render_option_json _render_with_renderer_json).each do |renderer_method|
+    [:_render_option_json, :_render_with_renderer_json].each do |renderer_method|
       define_method renderer_method do |resource, options|
         json = ActiveModel::Serializer.build_json(self, resource, options)