diff --git a/guides/source/getting_started.md b/guides/source/getting_started.md
index 18cf6873ee..4273f2d95c 100644
--- a/guides/source/getting_started.md
+++ b/guides/source/getting_started.md
@@ -1654,9 +1654,10 @@ model, `app/models/post.rb`, as follows:
 
 ```ruby
 class Post < ActiveRecord::Base
+  has_many :comments, dependent: :destroy
   validates :title, presence: true,
                     length: { minimum: 5 }
-  has_many :comments, dependent: :destroy
+  [...]
 end
 ```