diff --git a/railties/guides/source/getting_started.textile b/railties/guides/source/getting_started.textile
index 5774eba5ae..ca6a404212 100644
--- a/railties/guides/source/getting_started.textile
+++ b/railties/guides/source/getting_started.textile
@@ -450,11 +450,7 @@ start a web server on your development machine. You can do this by running:
 $ rails server
 </shell>
 
-TIP: Some environments require that you install a JavaScript runtime to compile
-CoffeeScript to JavaScript and will give you an +execjs+ error the first time
-you run +rails server+. +therubyracer+ and +therubyrhino+ are commonly used
-runtimes for Ruby and JRuby respectively. You can also investigate a list
-of runtimes at "ExecJS":https://github.com/sstephenson/execjs.
+TIP: Compiling CoffeeScript to JavaScript requires a JavaScript runtime and the absence of a runtime will give you an +execjs+ error. Usually Mac OS X and Windows come with a JavaScript runtime installed. +therubyracer+ and +therubyrhino+ are the commonly used runtimes for Ruby and JRuby respectively. You can also investigate a list of runtimes at "ExecJS":https://github.com/sstephenson/execjs.
 
 This will fire up an instance of the WEBrick web server by default (Rails can
 also use several other web servers). To see your application in action, open a