2 files changed, 4 insertions, 4 deletions
diff --git a/actionpack/lib/abstract_controller/layouts.rb b/actionpack/lib/abstract_controller/layouts.rb
index d1b87b67ee..8f73e244d7 100644
--- a/actionpack/lib/abstract_controller/layouts.rb
+++ b/actionpack/lib/abstract_controller/layouts.rb
@@ -292,15 +292,15 @@ module AbstractController
       end
     end
 
-    attr_writer :action_has_layout
+    attr_internal_writer :action_has_layout
 
     def initialize(*)
-      @action_has_layout = true
+      @_action_has_layout = true
       super
     end
 
     def action_has_layout?
-      @action_has_layout
+      @_action_has_layout
     end
 
   private
diff --git a/actionpack/lib/abstract_controller/rendering.rb b/actionpack/lib/abstract_controller/rendering.rb
index 09398c322a..ab2c532859 100644
--- a/actionpack/lib/abstract_controller/rendering.rb
+++ b/actionpack/lib/abstract_controller/rendering.rb
@@ -123,7 +123,7 @@ module AbstractController
     private
 
     DEFAULT_PROTECTED_INSTANCE_VARIABLES = %w(
-      @_action_name @_response_body @_formats @_prefixes
+      @_action_name @_response_body @_formats @_prefixes @_config
       @_view_context_class @_view_renderer @_lookup_context
     )