2 files changed, 4 insertions, 4 deletions
diff --git a/railties/lib/rails/application.rb b/railties/lib/rails/application.rb
index 1680a6ed00..c7b19c964a 100644
--- a/railties/lib/rails/application.rb
+++ b/railties/lib/rails/application.rb
@@ -66,9 +66,10 @@ module Rails
       end
     end
 
-    attr_accessor :assets, :sandbox, :queue
+    attr_accessor :assets, :sandbox
     alias_method :sandbox?, :sandbox
     attr_reader :reloaders
+    attr_writer :queue
 
     delegate :default_url_options, :default_url_options=, :to => :routes
 
diff --git a/railties/lib/rails/application/routes_reloader.rb b/railties/lib/rails/application/routes_reloader.rb
index 7f9190b01a..19f616ec50 100644
--- a/railties/lib/rails/application/routes_reloader.rb
+++ b/railties/lib/rails/application/routes_reloader.rb
@@ -24,12 +24,11 @@ module Rails
 
       def updater
         @updater ||= begin
-          dirs = @external_routes.inject({}) do |hash, dir|
-            hash.merge(dir.to_s => ["rb"])
+          dirs = @external_routes.each_with_object({}) do |dir, hash|
+            hash[dir.to_s] = %w(rb)
           end
 
           updater = ActiveSupport::FileUpdateChecker.new(paths, dirs) { reload! }
-
           updater.execute
           updater
         end