diff --git a/actionmailer/actionmailer.gemspec b/actionmailer/actionmailer.gemspec
index ea6df10a6f06..67ec0d109702 100644
--- a/actionmailer/actionmailer.gemspec
+++ b/actionmailer/actionmailer.gemspec
@@ -15,7 +15,7 @@ Gem::Specification.new do |s|
   s.email    = 'david@loudthinking.com'
   s.homepage = 'http://www.rubyonrails.org'
 
-  s.files        = Dir['CHANGELOG.md', 'README.rdoc', 'MIT-LICENSE', 'lib/**/*'].select { |path| File.file? path }
+  s.files        = Dir['CHANGELOG.md', 'README.rdoc', 'MIT-LICENSE', 'lib/**/*']
   s.require_path = 'lib'
   s.requirements << 'none'
 
diff --git a/actionpack/actionpack.gemspec b/actionpack/actionpack.gemspec
index 883aaab6fb20..89fdd528c291 100644
--- a/actionpack/actionpack.gemspec
+++ b/actionpack/actionpack.gemspec
@@ -15,7 +15,7 @@ Gem::Specification.new do |s|
   s.email    = 'david@loudthinking.com'
   s.homepage = 'http://www.rubyonrails.org'
 
-  s.files        = Dir['CHANGELOG.md', 'README.rdoc', 'MIT-LICENSE', 'lib/**/*'].select { |path| File.file? path }
+  s.files        = Dir['CHANGELOG.md', 'README.rdoc', 'MIT-LICENSE', 'lib/**/*']
   s.require_path = 'lib'
   s.requirements << 'none'
 
diff --git a/activemodel/activemodel.gemspec b/activemodel/activemodel.gemspec
index 018a60ba9022..51655fe3daac 100644
--- a/activemodel/activemodel.gemspec
+++ b/activemodel/activemodel.gemspec
@@ -15,7 +15,7 @@ Gem::Specification.new do |s|
   s.email    = 'david@loudthinking.com'
   s.homepage = 'http://www.rubyonrails.org'
 
-  s.files        = Dir['CHANGELOG.md', 'MIT-LICENSE', 'README.rdoc', 'lib/**/*'].select { |path| File.file? path }
+  s.files        = Dir['CHANGELOG.md', 'MIT-LICENSE', 'README.rdoc', 'lib/**/*']
   s.require_path = 'lib'
 
   s.add_dependency 'activesupport', version
diff --git a/activerecord/activerecord.gemspec b/activerecord/activerecord.gemspec
index 2df874b525e8..31ddb01123bc 100644
--- a/activerecord/activerecord.gemspec
+++ b/activerecord/activerecord.gemspec
@@ -15,7 +15,7 @@ Gem::Specification.new do |s|
   s.email    = 'david@loudthinking.com'
   s.homepage = 'http://www.rubyonrails.org'
 
-  s.files        = Dir['CHANGELOG.md', 'MIT-LICENSE', 'README.rdoc', 'examples/**/*', 'lib/**/*'].select { |path| File.file? path }
+  s.files        = Dir['CHANGELOG.md', 'MIT-LICENSE', 'README.rdoc', 'examples/**/*', 'lib/**/*']
   s.require_path = 'lib'
 
   s.extra_rdoc_files = %w(README.rdoc)
diff --git a/activesupport/activesupport.gemspec b/activesupport/activesupport.gemspec
index 2c536cbd05c3..a4216d2cb4a9 100644
--- a/activesupport/activesupport.gemspec
+++ b/activesupport/activesupport.gemspec
@@ -15,7 +15,7 @@ Gem::Specification.new do |s|
   s.email    = 'david@loudthinking.com'
   s.homepage = 'http://www.rubyonrails.org'
 
-  s.files        = Dir['CHANGELOG.md', 'MIT-LICENSE', 'README.rdoc', 'lib/**/*'].select { |path| File.file? path }
+  s.files        = Dir['CHANGELOG.md', 'MIT-LICENSE', 'README.rdoc', 'lib/**/*']
   s.require_path = 'lib'
 
   s.rdoc_options.concat ['--encoding',  'UTF-8']
diff --git a/rails.gemspec b/rails.gemspec
index d7a1e10459f7..ba94354bf110 100644
--- a/rails.gemspec
+++ b/rails.gemspec
@@ -18,7 +18,7 @@ Gem::Specification.new do |s|
 
   s.bindir      = 'bin'
   s.executables = []
-  s.files       = Dir['guides/**/*'].select { |path| File.file? path }
+  s.files       = Dir['guides/**/*']
 
   s.add_dependency 'activesupport', version
   s.add_dependency 'actionpack',    version
diff --git a/railties/railties.gemspec b/railties/railties.gemspec
index ec0f4266c031..e39430560f55 100644
--- a/railties/railties.gemspec
+++ b/railties/railties.gemspec
@@ -15,7 +15,7 @@ Gem::Specification.new do |s|
   s.email    = 'david@loudthinking.com'
   s.homepage = 'http://www.rubyonrails.org'
 
-  s.files        = Dir['CHANGELOG.md', 'README.rdoc', 'bin/**/*', 'lib/**/{*,.[a-z]*}'].select { |path| File.file? path }
+  s.files        = Dir['CHANGELOG.md', 'README.rdoc', 'bin/**/*', 'lib/**/{*,.[a-z]*}']
   s.require_path = 'lib'
 
   s.bindir      = 'bin'