diff --git a/railties/lib/rails/engine.rb b/railties/lib/rails/engine.rb
index 2015a944f08c0d85e0aac955ee3c991fff84175f..6a125685d01097e3ec0f259ae4f54b2fbf9bb475 100644
--- a/railties/lib/rails/engine.rb
+++ b/railties/lib/rails/engine.rb
@@ -523,6 +523,7 @@ def load_seed
 
     initializer :append_assets_path do |app|
       app.config.assets.paths.unshift *paths["vendor/assets"].existent
+      app.config.assets.paths.unshift *paths["lib/assets"].existent
       app.config.assets.paths.unshift *paths["app/assets"].existent
     end