diff --git a/actionmailer/actionmailer.gemspec b/actionmailer/actionmailer.gemspec
index 2ae85f8b5757db3101c5beea8716a7bd93c5fcdc..ee02cf69459a21966013560b0f8dcfcd3a7ed2ca 100644
--- a/actionmailer/actionmailer.gemspec
+++ b/actionmailer/actionmailer.gemspec
@@ -17,8 +17,6 @@
   s.require_path = 'lib'
   s.requirements << 'none'
 
-  s.has_rdoc = true
-
   s.add_dependency('actionpack',  version)
   s.add_dependency('mail',        '~> 2.2.15')
 end
diff --git a/actionpack/actionpack.gemspec b/actionpack/actionpack.gemspec
index 651f3b164ac66e4e9bbc3fe7f9fd290bb8c840da..6c55842eea6a26ad846cd26039d9f8b9145237ea 100644
--- a/actionpack/actionpack.gemspec
+++ b/actionpack/actionpack.gemspec
@@ -17,8 +17,6 @@
   s.require_path = 'lib'
   s.requirements << 'none'
 
-  s.has_rdoc = true
-
   s.add_dependency('activesupport',    version)
   s.add_dependency('activemodel',      version)
   s.add_dependency('rack-cache',       '~> 1.0.0')
diff --git a/activemodel/activemodel.gemspec b/activemodel/activemodel.gemspec
index fec9c7ff8b987f950ce75af93ec22a028f83df5a..9f80673bb84a5d521629124d72f76ffa5933058e 100644
--- a/activemodel/activemodel.gemspec
+++ b/activemodel/activemodel.gemspec
@@ -17,8 +17,6 @@
   s.files        = Dir['CHANGELOG', 'MIT-LICENSE', 'README.rdoc', 'lib/**/*']
   s.require_path = 'lib'
 
-  s.has_rdoc = true
-
   s.add_dependency('activesupport', version)
   s.add_dependency('builder',       '~> 3.0.0')
   s.add_dependency('i18n',          '~> 0.5.0')
diff --git a/activerecord/activerecord.gemspec b/activerecord/activerecord.gemspec
index b1df24844ae5b10a214f81b632fa72c594587411..c3cd76a71432715230dc782d27c9dfa8af5695ea 100644
--- a/activerecord/activerecord.gemspec
+++ b/activerecord/activerecord.gemspec
@@ -17,7 +17,6 @@
   s.files        = Dir['CHANGELOG', 'README.rdoc', 'examples/**/*', 'lib/**/*']
   s.require_path = 'lib'
 
-  s.has_rdoc         = true
   s.extra_rdoc_files = %w( README.rdoc )
   s.rdoc_options.concat ['--main',  'README.rdoc']
 
diff --git a/activeresource/activeresource.gemspec b/activeresource/activeresource.gemspec
index a71168722b15fcb679fe887498540fba5b7e4250..c2fd707e9bc5790836a4695b5a91ccb728747ec9 100644
--- a/activeresource/activeresource.gemspec
+++ b/activeresource/activeresource.gemspec
@@ -17,7 +17,6 @@
   s.files        = Dir['CHANGELOG', 'README.rdoc', 'examples/**/*', 'lib/**/*']
   s.require_path = 'lib'
 
-  s.has_rdoc         = true
   s.extra_rdoc_files = %w( README.rdoc )
   s.rdoc_options.concat ['--main',  'README.rdoc']
 
diff --git a/activesupport/activesupport.gemspec b/activesupport/activesupport.gemspec
index df7f68fecf9f42b072fbc7f7198fc28e5ddac93e..eaecb30090c760780c859072de95356592f2a9ec 100644
--- a/activesupport/activesupport.gemspec
+++ b/activesupport/activesupport.gemspec
@@ -16,6 +16,4 @@
 
   s.files        = Dir['CHANGELOG', 'README.rdoc', 'lib/**/*']
   s.require_path = 'lib'
-
-  s.has_rdoc = true
 end
diff --git a/railties/railties.gemspec b/railties/railties.gemspec
index 1e233c885e8e28021e65f1c7d9faab7254ae4b20..b1eda71c7fb2ec883714624e0e851c56a054e107 100644
--- a/railties/railties.gemspec
+++ b/railties/railties.gemspec
@@ -17,7 +17,6 @@
   s.require_path       = 'lib'
 
   s.rdoc_options << '--exclude' << '.'
-  s.has_rdoc = false
 
   s.add_dependency('rake',          '>= 0.8.7')
   s.add_dependency('thor',          '~> 0.14.4')