diff --git a/Vagrantfile b/Vagrantfile
index af60cf386..f3e56c6ee 100644
--- a/Vagrantfile
+++ b/Vagrantfile
@@ -39,7 +39,7 @@ Vagrant::configure("2") do |config|
   end
 
   config.vm.define "dokku-deb", autostart: false do |vm|
-    vm.vm.network :forwarded_port, guest: 80, host: ENV['FORWARDED_PORT']
+    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 => "cd /root/dokku && make install-from-deb"