diff --git a/lib/routes_upgrader.rb b/lib/routes_upgrader.rb
index a3aa263..a47f024 100644
--- a/lib/routes_upgrader.rb
+++ b/lib/routes_upgrader.rb
@@ -327,7 +327,7 @@ module Rails
           r.to_route_code
         end.join("\n")
         
-        "#{app_name.classify}::Application.routes.draw do\n#{@new_code}\nend\n"
+        "#{app_name.underscore.classify}::Application.routes.draw do\n#{@new_code}\nend\n"
       end
       
     private