diff --git a/debian-8/http/preseed.cfg b/debian-8/http/preseed.cfg
index 5348e8c..b49b671 100644
--- a/debian-8/http/preseed.cfg
+++ b/debian-8/http/preseed.cfg
@@ -11,6 +11,9 @@
 d-i finish-install/reboot_in_progress note
 d-i grub-installer/only_debian boolean true
 d-i grub-installer/with_other_os boolean true
+grub-pc grub-pc/install_devices multiselect /dev/vda
+grub-installer grub-installer/choose_bootdev select /dev/vda
+
 d-i netcfg/get_domain string unassigned-domain
 d-i netcfg/get_hostname string unassigned-hostname