Rails engine does not recognize #layout call in production

example.rb

# Rails 3.2.12


# Rails engine
# app/controllers/puddy/application_controller.rb
modue Puddy
  class ApplicationController < ActionController::Base
    layout 'puddy/dashboard'
    #...
  end
end

# lib/puddy/engine.rb
module Puddy
  class Engine < ::Rails::Engine
    isolate_namespace Puddy
  end
end

# On development machine, when rendered:
# Rendered vendor/bundle/ruby/2.0.0/bundler/gems/puddy-adcff824a188/app/views/puddy/accounts/index.html.erb within layouts/puddy/dashboard (1.4ms)

# On production machine, when rendered:
# Rendered .../ruby/1.9.1/bundler/gems/puddy-adcff824a188/app/views/puddy/accounts/index.html.erb within layouts/application (109.0ms)