diff --git a/Vagrantfile b/Vagrantfile
index ba7b7352ab9..d0cd2fad533 100644
--- a/Vagrantfile
+++ b/Vagrantfile
@@ -6,6 +6,7 @@ BOX_URI = ENV["BOX_URI"] || "https://cloud-images.ubuntu.com/vagrant/trusty/curr
 BOX_MEMORY = ENV["BOX_MEMORY"] || "1024"
 DOKKU_DOMAIN = ENV["DOKKU_DOMAIN"] || "dokku.me"
 DOKKU_IP = ENV["DOKKU_IP"] || "10.0.0.2"
+FORWARDED_PORT = (ENV["FORWARDED_PORT"] || '8080').to_i
 PREBUILT_STACK_URL = File.exist?("#{File.dirname(__FILE__)}/stack.tgz") ? 'file:///root/dokku/stack.tgz' : nil
 PUBLIC_KEY_PATH = "#{Dir.home}/.ssh/id_rsa.pub"
 
@@ -32,7 +33,7 @@ Vagrant::configure("2") do |config|
   config.vm.define "empty", autostart: false
 
   config.vm.define "dokku", primary: true do |vm|
-    vm.vm.network :forwarded_port, guest: 80, host: 8080
+    vm.vm.network :forwarded_port, guest: 80, host: FORWARDED_PORT
     vm.vm.hostname = "#{DOKKU_DOMAIN}"
     vm.vm.network :private_network, ip: DOKKU_IP
     vm.vm.provision :shell, :inline => "apt-get -qq -y install git > /dev/null && cd /root/dokku && #{make_cmd}"
@@ -40,7 +41,7 @@ Vagrant::configure("2") do |config|
   end
 
   config.vm.define "dokku-deb", autostart: false do |vm|
-    vm.vm.network :forwarded_port, guest: 80, host: 8080
+    vm.vm.network :forwarded_port, guest: 80, host: ENV['FORWARDED_PORT']
     vm.vm.hostname = "#{DOKKU_DOMAIN}"
     vm.vm.network :private_network, ip: DOKKU_IP
     vm.vm.provision :shell, :inline => "cd /root/dokku && make install-from-deb"
diff --git a/docs/getting-started/install/vagrant.md b/docs/getting-started/install/vagrant.md
index adcf395ee25..6dd618cafa7 100644
--- a/docs/getting-started/install/vagrant.md
+++ b/docs/getting-started/install/vagrant.md
@@ -21,7 +21,8 @@
     # - `BOX_URI`
     # - `BOX_MEMORY`
     # - `DOKKU_DOMAIN`
-    # - `DOKKU_IP`.
+    # - `DOKKU_IP`
+    # - `FORWARDED_PORT`.
     cd path/to/dokku
     vagrant up
     ```