diff --git a/ruby.md b/ruby.md
index 1fdd108..5d5790a 100644
--- a/ruby.md
+++ b/ruby.md
@@ -1,38 +1,46 @@
-## Installing Vim with Ruby support
-
-### OSX (Mavericks)
-
-Mavericks already ships with Ruby-enabled Vim. :smiley:
-
-If you wish to install a newer version (recommended), check out [RVM](http://rvm.io/) and [Homebrew](http://brew.sh/).
-
-```sh
-# Assuming that you already installed RVM and Homebrew
-rvm install ruby
-rvm use ruby
-brew install vim
-```
-
-### Ubuntu
-
-```
-sudo apt-get install vim-nox
-```
-
-### Arch Linux
-
-```
-sudo pacman -S gvim
-```
-
-### Centos
-
-You can build the recent version of Vim from source.
-
-- [Installing Vim on CentOS 6.3](http://sudoers-d.com/blog/2013/01/18/installing-vim-on-centos-6-dot-3/)
-
-### Windows
-
-Parallel installer of vim-plug may not work smoothly on Windows, but you can still try it.
-
-Check out the relevant section from of my article, [Installing Vim with Ruby support](http://junegunn.kr/2013/09/installing-vim-with-ruby-support/). It's a little outdated, but you'll get the idea.
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+## Installing Vim with Ruby support
+
+### OSX (Mavericks)
+
+Mavericks already ships with Ruby-enabled Vim. :smiley:
+
+If you wish to install a newer version (recommended), check out [RVM](http://rvm.io/) and [Homebrew](http://brew.sh/).
+
+```sh
+# Assuming that you already installed RVM and Homebrew
+rvm install ruby
+rvm use ruby
+brew install vim
+```
+
+### Ubuntu
+
+```
+sudo apt-get install vim-nox
+```
+
+### Arch Linux
+
+```
+sudo pacman -S gvim
+```
+
+### Centos
+
+You can build the recent version of Vim from source.
+
+- [Installing Vim on CentOS 6.3](http://sudoers-d.com/blog/2013/01/18/installing-vim-on-centos-6-dot-3/)
+
+### Windows
+
+Check out the relevant section from of my article, [Installing Vim with Ruby support](http://junegunn.kr/2013/09/installing-vim-with-ruby-support/). It's a little outdated, but you'll get the idea.
+
+However, parallel installer is not stable on Windows and I don't recommend using it.
+
+You might want to add the following code snippet to your .vimrc:
+
+```vim
+if has('win32') || has('win64')
+  let g:plug_threads = 1
+endif
+```
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