diff --git a/lib/api_taster/route.rb b/lib/api_taster/route.rb
index 0ec0a5e..e36c0ab 100644
--- a/lib/api_taster/route.rb
+++ b/lib/api_taster/route.rb
@@ -37,6 +37,7 @@ def normalise_routes!
         route_set.routes.each do |route|
           next if route.app.is_a?(Sprockets::Environment)
           next if route.app == ApiTaster::Engine
+          next if route.defaults[:controller].to_s.starts_with?('rails/')
 
           rack_app = discover_rack_app(route.app)
 
diff --git a/spec/route_spec.rb b/spec/route_spec.rb
index 41747d2..d376568 100644
--- a/spec/route_spec.rb
+++ b/spec/route_spec.rb
@@ -32,6 +32,9 @@ module ApiTaster
         end
         mount Rails.application => '/app'
         mount proc {} => '/rack_app'
+
+        get 'rails/info/properties' => 'rails/info#properties', :as => :rails_info_properties
+        get '/' => 'rails/welcome#index'
       end
 
       Rails.application.stub(:routes).and_return(routes)