diff --git a/Gemfile b/Gemfile
index ee8bfedb..fcca6e84 100644
--- a/Gemfile
+++ b/Gemfile
@@ -11,14 +11,8 @@ else
   gemspec development_group: :gem_build_tools
 end
 
-require 'rbconfig'
-
-case RbConfig::CONFIG['target_os']
-when /mswin|mingw|cygwin/i
-  gem 'wdm', '>= 0.1.0'
-when /bsd|dragonfly/i
-  gem 'rb-kqueue', '>= 0.2'
-end
+gem 'rb-kqueue', '>= 0.2'
+gem 'wdm', '>= 0.1.0'
 
 group :test do
   gem 'coveralls'
diff --git a/README.md b/README.md
index cc59e02f..4d16e9f3 100644
--- a/README.md
+++ b/README.md
@@ -265,7 +265,7 @@ If you are on Windows, it's recommended to use the [`wdm`](https://github.com/Ma
 Please add the following to your Gemfile:
 
 ```ruby
-gem 'wdm', '>= 0.1.0', platforms: [:mingw, :mswin, :x64_mingw, :jruby]
+gem 'wdm', '>= 0.1.0'
 ```
 
 ### On \*BSD
@@ -275,11 +275,7 @@ If you are on \*BSD you can try to use the [`rb-kqueue`](https://github.com/mat8
 Please add the following to your Gemfile:
 
 ```ruby
-require 'rbconfig'
-if RbConfig::CONFIG['target_os'] =~ /bsd|dragonfly/i
-  gem 'rb-kqueue', '>= 0.2'
-end
-
+gem 'rb-kqueue', '>= 0.2'
 ```
 
 ### Getting the [polling fallback message](#options)?
diff --git a/lib/listen/adapter/bsd.rb b/lib/listen/adapter/bsd.rb
index 84266232..186ded37 100644
--- a/lib/listen/adapter/bsd.rb
+++ b/lib/listen/adapter/bsd.rb
@@ -22,10 +22,7 @@ class BSD < Base
 
       BUNDLER_DECLARE_GEM = <<-EOS.gsub(/^ {6}/, '')
         Please add the following to your Gemfile to avoid polling for changes:
-          require 'rbconfig'
-          if RbConfig::CONFIG['target_os'] =~ /#{OS_REGEXP}/
-            gem 'rb-kqueue', '>= 0.2'
-          end
+          gem 'rb-kqueue', '>= 0.2'
       EOS
 
       def self.usable?
diff --git a/lib/listen/adapter/windows.rb b/lib/listen/adapter/windows.rb
index 3b3a1854..799d4587 100644
--- a/lib/listen/adapter/windows.rb
+++ b/lib/listen/adapter/windows.rb
@@ -9,7 +9,7 @@ class Windows < Base
 
       BUNDLER_DECLARE_GEM = <<-EOS.gsub(/^ {6}/, '')
         Please add the following to your Gemfile to avoid polling for changes:
-          gem 'wdm', '>= 0.1.0' if Gem.win_platform?
+          gem 'wdm', '>= 0.1.0'
       EOS
 
       def self.usable?