diff --git a/plugins/guests/linux/cap/mount_virtualbox_shared_folder.rb b/plugins/guests/linux/cap/mount_virtualbox_shared_folder.rb
index a66b0ac23..3280c8b29 100644
--- a/plugins/guests/linux/cap/mount_virtualbox_shared_folder.rb
+++ b/plugins/guests/linux/cap/mount_virtualbox_shared_folder.rb
@@ -72,7 +72,7 @@ module VagrantPlugins
 
           # Emit an upstart event if we can
           machine.communicate.sudo("[ -x /sbin/initctl ] && " +
-            "/sbin/initctl emit vagrant-mounted MOUNTPOINT=#{guestpath}")
+            "/sbin/initctl emit --no-wait vagrant-mounted MOUNTPOINT=#{guestpath}")
         end
       end
     end