diff --git a/railties/lib/rails/configuration.rb b/railties/lib/rails/configuration.rb
index 1a2f217d201ba06be5b73e6e15bd4b385410b5ee..d877915460c1fd71ac28a3155aac7bc9365c41d0 100644
--- a/railties/lib/rails/configuration.rb
+++ b/railties/lib/rails/configuration.rb
@@ -62,19 +62,33 @@ def set_root_path!
         end
 
       @paths = Rails::Application::Root.new(root_path)
-      @paths.app                 "app",             :load_path => true
-      @paths.app.metals          "app/metal",       :eager_load => true
-      @paths.app.models          "app/models",      :eager_load => true
-      @paths.app.controllers     "app/controllers", builtin_directories, :eager_load => true
-      @paths.app.helpers         "app/helpers",     :eager_load => true
-      @paths.app.services        "app/services",    :load_path => true
-      @paths.lib                 "lib",             :load_path => true
-      @paths.vendor              "vendor",          :load_path => true
-      @paths.vendor.plugins      "vendor/plugins"
-      @paths.cache               "tmp/cache"
-      @paths.config              "config"
-      @paths.config.locales      "config/locales"
-      @paths.config.environments "config/environments", :glob => "#{RAILS_ENV}.rb"
+      @paths.app                 = "app"
+      @paths.app.metals          = "app/metal"
+      @paths.app.models          = "app/models"
+      @paths.app.controllers     = "app/controllers"
+      @paths.app.helpers         = "app/helpers"
+      @paths.app.services        = "app/services"
+      @paths.lib                 = "lib"
+      @paths.vendor              = "vendor"
+      @paths.vendor.plugins      = "vendor/plugins"
+      @paths.cache               = "tmp/cache"
+      @paths.config              = "config"
+      @paths.config.locales      = "config/locales"
+      @paths.config.environments = "config/environments"
+
+      @paths.app.controllers.concat builtin_directories
+
+      @paths.app.load_path!
+      @paths.app.metals.load_path!
+      @paths.app.models.eager_load!
+      @paths.app.controllers.eager_load!
+      @paths.app.helpers.eager_load!
+      @paths.app.services.load_path!
+      @paths.app.metals.eager_load!
+      @paths.lib.load_path!
+      @paths.vendor.load_path!
+
+      @paths.config.environments.glob = "#{RAILS_ENV}.rb"
 
       RAILS_ROOT.replace root_path
     end