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-rw-r--r--actionpack/lib/abstract_controller/rendering.rb2
1 files changed, 1 insertions, 1 deletions
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
)