diff --git a/guides/source/command_line.md b/guides/source/command_line.md
index 2790a4740a..9d1fb03fab 100644
--- a/guides/source/command_line.md
+++ b/guides/source/command_line.md
@@ -378,7 +378,7 @@ Active Record version     4.0.0.beta
 Action Pack version       4.0.0.beta
 Action Mailer version     4.0.0.beta
 Active Support version    4.0.0.beta
-Middleware                ActionDispatch::Static, Rack::Lock, Rack::Runtime, Rack::MethodOverride, ActionDispatch::RequestId, Rails::Rack::Logger, ActionDispatch::ShowExceptions, ActionDispatch::DebugExceptions, ActionDispatch::RemoteIp, ActionDispatch::Reloader, ActionDispatch::Callbacks, ActiveRecord::Migration::CheckPending, ActiveRecord::ConnectionAdapters::ConnectionManagement, ActiveRecord::QueryCache, ActionDispatch::Cookies, ActionDispatch::Session::EncryptedCookieStore, ActionDispatch::Flash, ActionDispatch::ParamsParser, Rack::Head, Rack::ConditionalGet, Rack::ETag, ActionDispatch::BestStandardsSupport
+Middleware                ActionDispatch::Static, Rack::Lock, Rack::Runtime, Rack::MethodOverride, ActionDispatch::RequestId, Rails::Rack::Logger, ActionDispatch::ShowExceptions, ActionDispatch::DebugExceptions, ActionDispatch::RemoteIp, ActionDispatch::Reloader, ActionDispatch::Callbacks, ActiveRecord::Migration::CheckPending, ActiveRecord::ConnectionAdapters::ConnectionManagement, ActiveRecord::QueryCache, ActionDispatch::Cookies, ActionDispatch::Session::EncryptedCookieStore, ActionDispatch::Flash, ActionDispatch::ParamsParser, Rack::Head, Rack::ConditionalGet, Rack::ETag
 Application root          /home/foobar/commandsapp
 Environment               development
 Database adapter          sqlite3
diff --git a/guides/source/configuring.md b/guides/source/configuring.md
index c1f31fd2b0..be46e15078 100644
--- a/guides/source/configuring.md
+++ b/guides/source/configuring.md
@@ -207,7 +207,6 @@ Every Rails application comes with a standard set of middleware which it uses in
 * `ActionDispatch::ParamsParser` parses out parameters from the request into `params`.
 * `Rack::MethodOverride` allows the method to be overridden if `params[:_method]` is set. This is the middleware which supports the PATCH, PUT, and DELETE HTTP method types.
 * `ActionDispatch::Head` converts HEAD requests to GET requests and serves them as so.
-* `ActionDispatch::BestStandardsSupport` enables "best standards support" so that IE8 renders some elements correctly.
 
 Besides these usual middleware, you can add your own by using the `config.middleware.use` method:
 
@@ -230,13 +229,13 @@ config.middleware.insert_after ActionDispatch::Head, Magical::Unicorns
 Middlewares can also be completely swapped out and replaced with others:
 
 ```ruby
-config.middleware.swap ActionDispatch::BestStandardsSupport, Magical::Unicorns
+config.middleware.swap ActionController::Failsafe, Lifo::Failsafe
 ```
 
 They can also be removed from the stack completely:
 
 ```ruby
-config.middleware.delete ActionDispatch::BestStandardsSupport
+config.middleware.delete "Rack::MethodOverride"
 ```
 
 ### Configuring i18n
diff --git a/guides/source/rails_on_rack.md b/guides/source/rails_on_rack.md
index a6119eb433..d8477d89e3 100644
--- a/guides/source/rails_on_rack.md
+++ b/guides/source/rails_on_rack.md
@@ -137,7 +137,6 @@ use ActionDispatch::ParamsParser
 use Rack::Head
 use Rack::ConditionalGet
 use Rack::ETag
-use ActionDispatch::BestStandardsSupport
 run MyApp::Application.routes
 ```
 
@@ -215,7 +214,6 @@ And to remove browser related middleware,
 
 ```ruby
 # config/application.rb
-config.middleware.delete "ActionDispatch::BestStandardsSupport"
 config.middleware.delete "Rack::MethodOverride"
 ```
 
@@ -307,10 +305,6 @@ Much of Action Controller's functionality is implemented as Middlewares. The fol
 
 * Adds ETag header on all String bodies. ETags are used to validate cache.
 
- **`ActionDispatch::BestStandardsSupport`**
-
-* Enables “best standards support” so that IE8 renders some elements correctly.
-
 TIP: It's possible to use any of the above middlewares in your custom Rack stack.
 
 ### Using Rack Builder