diff --git a/spec/functional_test/fixtures/ruby/rails/config/routes.rb b/spec/functional_test/fixtures/ruby/rails/config/routes.rb
index bdac69c2..a12b236b 100644
--- a/spec/functional_test/fixtures/ruby/rails/config/routes.rb
+++ b/spec/functional_test/fixtures/ruby/rails/config/routes.rb
@@ -1,7 +1,10 @@
 Rails.application.routes.draw do
     resources :posts
     # Define your application routes per the DSL in https://guides.rubyonrails.org/routing.html
-  
+
     # Defines the root path route ("/")
     # root "articles#index"
-  end
\ No newline at end of file
+    get "up" => "rails/health#show", as: :rails_health_check
+    get "service-worker" => "rails/pwa#service_worker", as: :pwa_service_worker
+    get "manifest" => "rails/pwa#manifest", as: :pwa_manifest
+  end
diff --git a/spec/functional_test/testers/ruby/rails_spec.cr b/spec/functional_test/testers/ruby/rails_spec.cr
index 59d67c47..47fc1b86 100644
--- a/spec/functional_test/testers/ruby/rails_spec.cr
+++ b/spec/functional_test/testers/ruby/rails_spec.cr
@@ -22,6 +22,9 @@ extected_endpoints = [
     Param.new("X-API-KEY", "", "header"),
   ]),
   Endpoint.new("/posts/1", "DELETE"),
+  Endpoint.new("/up", "GET"),
+  Endpoint.new("/service-worker", "GET"),
+  Endpoint.new("/manifest", "GET"),
 ]
 
 FunctionalTester.new("fixtures/ruby/rails/", {
diff --git a/src/models/noir.cr b/src/models/noir.cr
index 14e4475c..a08e033c 100644
--- a/src/models/noir.cr
+++ b/src/models/noir.cr
@@ -139,6 +139,8 @@ class NoirRunner
 
     @endpoints.each do |endpoint|
       tiny_tmp = endpoint
+
+      # Remove space in param name
       if endpoint.params.size > 0
         tiny_tmp.params = [] of Param
         endpoint.params.each do |param|
@@ -149,6 +151,15 @@ class NoirRunner
         end
       end
 
+      # Check start with slash
+      if tiny_tmp.url[0] != "/"
+        tiny_tmp.url = "/#{tiny_tmp.url}"
+      end
+
+      # Check double slash
+      tiny_tmp.url = tiny_tmp.url.gsub_repeatedly("//", "/")
+      
+      # Duplicate check
       if tiny_tmp.url != ""
         is_new = true
         final.each do |dup|