diff --git a/lib/vagrant-lxc/synced_folder.rb b/lib/vagrant-lxc/synced_folder.rb
index ab543ee..855b40b 100644
--- a/lib/vagrant-lxc/synced_folder.rb
+++ b/lib/vagrant-lxc/synced_folder.rb
@@ -13,8 +13,8 @@ module Vagrant
           host_path  = Pathname.new(File.expand_path(data[:hostpath], machine.env.root_path))
           guest_path = data[:guestpath]
 
-          env[:ui].warn(I18n.t("vagrant_lxc.messages.warn_owner")) if data[:owner]
-          env[:ui].warn(I18n.t("vagrant_lxc.messages.warn_group")) if data[:group]
+          machine.env.ui.warn(I18n.t("vagrant_lxc.messages.warn_owner")) if data[:owner]
+          machine.env.ui.warn(I18n.t("vagrant_lxc.messages.warn_group")) if data[:group]
 
           if !host_path.directory? && data[:create]
             # Host path doesn't exist, so let's create it.