diff --git a/activemodel/lib/active_model/errors.rb b/activemodel/lib/active_model/errors.rb
index a99bb001e4..bcf0810290 100644
--- a/activemodel/lib/active_model/errors.rb
+++ b/activemodel/lib/active_model/errors.rb
@@ -24,6 +24,8 @@ module ActiveModel
       :even                     => "must be even"
     }
   
+    ##
+    # :singleton-method:
     # Holds a hash with all the default error messages that can be replaced by your own copy or localizations.
     cattr_accessor :default_error_messages
 
diff --git a/activeresource/lib/active_resource/base.rb b/activeresource/lib/active_resource/base.rb
index bb284803d8..303b09ba76 100644
--- a/activeresource/lib/active_resource/base.rb
+++ b/activeresource/lib/active_resource/base.rb
@@ -202,6 +202,8 @@ module ActiveResource
   # sets the <tt>read_timeout</tt> of the internal Net::HTTP instance to the same value. The default
   # <tt>read_timeout</tt> is 60 seconds on most Ruby implementations.
   class Base
+    ##
+    # :singleton-method:
     # The logger for diagnosing and tracing Active Resource calls.
     cattr_accessor :logger
 
diff --git a/activesupport/lib/active_support/buffered_logger.rb b/activesupport/lib/active_support/buffered_logger.rb
index 77e0b1d33f..b2c863c893 100644
--- a/activesupport/lib/active_support/buffered_logger.rb
+++ b/activesupport/lib/active_support/buffered_logger.rb
@@ -13,6 +13,8 @@ module ActiveSupport
 
     MAX_BUFFER_SIZE = 1000
 
+    ##
+    # :singleton-method:
     # Set to false to disable the silencer
     cattr_accessor :silencer
     self.silencer = true
diff --git a/activesupport/lib/active_support/core_ext/logger.rb b/activesupport/lib/active_support/core_ext/logger.rb
index c622554860..24fe7294c9 100644
--- a/activesupport/lib/active_support/core_ext/logger.rb
+++ b/activesupport/lib/active_support/core_ext/logger.rb
@@ -30,6 +30,8 @@ require 'logger'
 #
 # Note: This logger is deprecated in favor of ActiveSupport::BufferedLogger
 class Logger
+  ##
+  # :singleton-method:
   # Set to false to disable the silencer
   cattr_accessor :silencer
   self.silencer = true