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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 6f17e3fcd9..7be61d94c9 100644
--- a/actionpack/lib/abstract_controller/rendering.rb
+++ b/actionpack/lib/abstract_controller/rendering.rb
@@ -22,7 +22,7 @@ module AbstractController
def render(*args, &block)
options = _normalize_render(*args, &block)
self.response_body = render_to_body(options)
- _process_format(rendered_format)
+ _process_format(rendered_format) if rendered_format
self.response_body
end