1 files changed, 12 insertions, 11 deletions
diff --git a/actionpack/lib/action_controller/metal/url_for.rb b/actionpack/lib/action_controller/metal/url_for.rb
index 4504d9cd10..1177a703b3 100644
--- a/actionpack/lib/action_controller/metal/url_for.rb
+++ b/actionpack/lib/action_controller/metal/url_for.rb
@@ -26,19 +26,20 @@ module ActionController
     include AbstractController::UrlFor
 
     def url_options
-      @_url_options ||= begin
-        hash = super.reverse_merge(
-          :host => request.host,
-          :port => request.optional_port,
-          :protocol => request.protocol,
-          :_path_segments => request.symbolized_path_parameters
-        )
+      @_url_options ||= super.reverse_merge(
+        :host => request.host,
+        :port => request.optional_port,
+        :protocol => request.protocol,
+        :_path_segments => request.symbolized_path_parameters
+      ).freeze
 
-        if _routes.equal?(env["action_dispatch.routes"])
-          hash[:script_name] = request.script_name.dup
+      if _routes.equal?(env["action_dispatch.routes"])
+        @_url_options.dup.tap do |options|
+          options[:script_name] = request.script_name.dup
+          options.freeze
         end
-
-        hash.freeze
+      else
+        @_url_options
       end
     end
   end