diff --git a/actionmailer/README.rdoc b/actionmailer/README.rdoc
index e5c2ed8c77..397ebe4201 100644
--- a/actionmailer/README.rdoc
+++ b/actionmailer/README.rdoc
@@ -146,7 +146,7 @@ The Base class has the full list of configuration options. Here's an example:
 
 The latest version of Action Mailer can be installed with RubyGems:
 
-  % gem install actionmailer
+  $ gem install actionmailer
 
 Source code can be downloaded as part of the Rails project on GitHub
 
@@ -173,4 +173,3 @@ Bug reports can be filed for the Ruby on Rails project here:
 Feature requests should be discussed on the rails-core mailing list here:
 
 * https://groups.google.com/forum/?fromgroups#!forum/rubyonrails-core
-
diff --git a/actionpack/README.rdoc b/actionpack/README.rdoc
index 44c980b070..0720c66cb9 100644
--- a/actionpack/README.rdoc
+++ b/actionpack/README.rdoc
@@ -28,7 +28,7 @@ can be used outside of Rails.
 
 The latest version of Action Pack can be installed with RubyGems:
 
-  % gem install actionpack
+  $ gem install actionpack
 
 Source code can be downloaded as part of the Rails project on GitHub
 
@@ -55,4 +55,3 @@ Bug reports can be filed for the Ruby on Rails project here:
 Feature requests should be discussed on the rails-core mailing list here:
 
 * https://groups.google.com/forum/?fromgroups#!forum/rubyonrails-core
-
diff --git a/actionview/README.rdoc b/actionview/README.rdoc
index 8b1f85f748..7a3e5e31d0 100644
--- a/actionview/README.rdoc
+++ b/actionview/README.rdoc
@@ -9,7 +9,7 @@ used to inline short Ruby snippets inside HTML), and XML Builder.
 
 The latest version of Action View can be installed with RubyGems:
 
-  % gem install actionview
+  $ gem install actionview
 
 Source code can be downloaded as part of the Rails project on GitHub
 
@@ -36,4 +36,3 @@ Bug reports can be filed for the Ruby on Rails project here:
 Feature requests should be discussed on the rails-core mailing list here:
 
 * https://groups.google.com/forum/?fromgroups#!forum/rubyonrails-core
-
diff --git a/activejob/README.md b/activejob/README.md
index d9ff561695..7268186c00 100644
--- a/activejob/README.md
+++ b/activejob/README.md
@@ -102,7 +102,7 @@ see the API Documentation for [ActiveJob::QueueAdapters](http://api.rubyonrails.
 The latest version of Active Job can be installed with RubyGems:
 
 ```
-  % gem install activejob
+  $ gem install activejob
 ```
 
 Source code can be downloaded as part of the Rails project on GitHub
diff --git a/activemodel/README.rdoc b/activemodel/README.rdoc
index 20414c1d61..77f5761993 100644
--- a/activemodel/README.rdoc
+++ b/activemodel/README.rdoc
@@ -235,7 +235,7 @@ behavior out of the box:
 
 The latest version of Active Model can be installed with RubyGems:
 
-  % gem install activemodel
+  $ gem install activemodel
 
 Source code can be downloaded as part of the Rails project on GitHub
 
@@ -262,4 +262,3 @@ Bug reports can be filed for the Ruby on Rails project here:
 Feature requests should be discussed on the rails-core mailing list here:
 
 * https://groups.google.com/forum/?fromgroups#!forum/rubyonrails-core
-
diff --git a/activerecord/README.rdoc b/activerecord/README.rdoc
index 3eac8cc422..7eb4e9db1a 100644
--- a/activerecord/README.rdoc
+++ b/activerecord/README.rdoc
@@ -188,7 +188,7 @@ Admit the Database:
 
 The latest version of Active Record can be installed with RubyGems:
 
-  % gem install activerecord
+  $ gem install activerecord
 
 Source code can be downloaded as part of the Rails project on GitHub:
 
@@ -215,4 +215,3 @@ Bug reports can be filed for the Ruby on Rails project here:
 Feature requests should be discussed on the rails-core mailing list here:
 
 * https://groups.google.com/forum/?fromgroups#!forum/rubyonrails-core
-
diff --git a/activesupport/README.rdoc b/activesupport/README.rdoc
index cd72f53821..14ce204303 100644
--- a/activesupport/README.rdoc
+++ b/activesupport/README.rdoc
@@ -10,7 +10,7 @@ outside of Rails.
 
 The latest version of Active Support can be installed with RubyGems:
 
-  % gem install activesupport
+  $ gem install activesupport
 
 Source code can be downloaded as part of the Rails project on GitHub:
 
@@ -37,4 +37,3 @@ Bug reports can be filed for the Ruby on Rails project here:
 Feature requests should be discussed on the rails-core mailing list here:
 
 * https://groups.google.com/forum/?fromgroups#!forum/rubyonrails-core
-