5 files changed, 11 insertions, 10 deletions
diff --git a/actionpack/lib/sprockets/assets.rake b/actionpack/lib/sprockets/assets.rake
index 80c3d4d0b8..a5145080c2 100644
--- a/actionpack/lib/sprockets/assets.rake
+++ b/actionpack/lib/sprockets/assets.rake
@@ -41,10 +41,8 @@ namespace :assets do
       config.assets.digest  = digest unless digest.nil?
       config.assets.digests = {}
 
-      env = Rails.application.assets
-      env.context_class.send :include, ::Sprockets::Helpers::PrecompileHelper
-
-      target = File.join(Rails.public_path, config.assets.prefix)
+      env      = Rails.application.assets
+      target   = File.join(Rails.public_path, config.assets.prefix)
       compiler = Sprockets::StaticCompiler.new(env,
                                                target,
                                                config.assets.precompile,
diff --git a/actionpack/lib/sprockets/helpers.rb b/actionpack/lib/sprockets/helpers.rb
index cd9c8f62e6..fee48386e0 100644
--- a/actionpack/lib/sprockets/helpers.rb
+++ b/actionpack/lib/sprockets/helpers.rb
@@ -1,6 +1,6 @@
 module Sprockets
   module Helpers
-    autoload :RailsHelper,      "sprockets/helpers/rails_helper"
-    autoload :PrecompileHelper, "sprockets/helpers/precompile_helper"
+    autoload :RailsHelper,    "sprockets/helpers/rails_helper"
+    autoload :IsolatedHelper, "sprockets/helpers/isolated_helper"
   end
 end
diff --git a/actionpack/lib/sprockets/helpers/precompile_helper.rb b/actionpack/lib/sprockets/helpers/isolated_helper.rb
index ca7927f6fb..3adb928c45 100644
--- a/actionpack/lib/sprockets/helpers/precompile_helper.rb
+++ b/actionpack/lib/sprockets/helpers/isolated_helper.rb
@@ -1,6 +1,6 @@
 module Sprockets
   module Helpers
-    module PrecompileHelper
+    module IsolatedHelper
       def controller
         nil
       end
diff --git a/actionpack/lib/sprockets/railtie.rb b/actionpack/lib/sprockets/railtie.rb
index e29612d320..3d330bd91a 100644
--- a/actionpack/lib/sprockets/railtie.rb
+++ b/actionpack/lib/sprockets/railtie.rb
@@ -43,7 +43,10 @@ module Sprockets
 
       ActiveSupport.on_load(:action_view) do
         include ::Sprockets::Helpers::RailsHelper
-        app.assets.context_class.send :include, ::Sprockets::Helpers::RailsHelper
+        app.assets.context_class.instance_eval do
+          include ::Sprockets::Helpers::IsolatedHelper
+          include ::Sprockets::Helpers::RailsHelper
+        end
       end
     end
 
diff --git a/railties/test/application/assets_test.rb b/railties/test/application/assets_test.rb
index e38ea30c30..63427c7792 100644
--- a/railties/test/application/assets_test.rb
+++ b/railties/test/application/assets_test.rb
@@ -28,7 +28,7 @@ module ApplicationTests
     end
 
     test "assets routes have higher priority" do
-      app_file "app/assets/javascripts/demo.js.erb", "<%= :alert %>();"
+      app_file "app/assets/javascripts/demo.js.erb", "a = <%= image_path('rails.png').inspect %>;"
 
       app_file 'config/routes.rb', <<-RUBY
         AppTemplate::Application.routes.draw do
@@ -39,7 +39,7 @@ module ApplicationTests
       require "#{app_path}/config/environment"
 
       get "/assets/demo.js"
-      assert_match "alert()", last_response.body
+      assert_equal 'a = "/assets/rails.png";', last_response.body.strip
     end
 
     test "assets do not require compressors until it is used" do