Ruby on Rails

I use this type of code for different message and status in my api.

def 404
respond_to do |format|
format.json {render json: { error: '404, not found' }, status: 404}
format.xml {render xml: { error: '404, not found' }, status: 404}
end
end

This works but can I refactoring this code, maybe to one single line?

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