diff --git a/website/source/docs/boxes.html.md b/website/source/docs/boxes.html.md
index 0632dcb10..97eb188b4 100644
--- a/website/source/docs/boxes.html.md
+++ b/website/source/docs/boxes.html.md
@@ -69,8 +69,8 @@ $ vagrant init hashicorp/precise64
 or you can update your `Vagrantfile` as follows:
 
 ```ruby
-Vagrant.configure("2") do
-  config.box = "hashicorp/precise64"
+Vagrant.configure("2") do |config|
+  config.vm.box = "hashicorp/precise64"
 end
 ```