diff --git a/actionpack/lib/sprockets/assets.rake b/actionpack/lib/sprockets/assets.rake
index 50278cffcd..0349b2865e 100644
--- a/actionpack/lib/sprockets/assets.rake
+++ b/actionpack/lib/sprockets/assets.rake
@@ -16,7 +16,7 @@ namespace :assets do
   end
 
   desc "Remove compiled assets"
-  task :clean => :environment do
+  task :clean => [:environment, 'tmp:cache:clear'] do
     assets = Rails.application.config.assets
     public_asset_path = Rails.public_path + assets.prefix
     rm_rf public_asset_path, :secure => true
diff --git a/railties/test/application/assets_test.rb b/railties/test/application/assets_test.rb
index 802b737483..38dd3f5a3f 100644
--- a/railties/test/application/assets_test.rb
+++ b/railties/test/application/assets_test.rb
@@ -80,7 +80,7 @@ module ApplicationTests
         Dir.chdir(app_path){ `bundle exec rake assets:clean` }
       end
 
-      files = Dir["#{app_path}/public/assets/**/*"]
+      files = Dir["#{app_path}/public/assets/**/*", "#{app_path}/tmp/cache/*"]
       assert_equal 0, files.length, "Expected no assets, but found #{files.join(', ')}"
     end