diff --git a/config/routes.rb b/config/routes.rb
index b88abb0..f796e50 100644
--- a/config/routes.rb
+++ b/config/routes.rb
@@ -18,4 +18,6 @@ get 'qbo/sync', :to => 'qbo#sync'
 get 'qbo/estimate/:id', :to => 'estimate#show', as: :estimate
 get 'qbo/invoice/:id', :to => 'invoice#show', as: :invoice
 resources :vehicles
-resources :customers, concerns: :vehicles
+resources :customers do
+  resources: :vehicles
+end