diff --git a/profiles/default.preseed b/profiles/default.preseed
index dd5246f..51ce8c9 100644
--- a/profiles/default.preseed
+++ b/profiles/default.preseed
@@ -96,7 +96,7 @@ debconf debconf/frontend select Noninteractive
 ### Boot loader installation
 d-i grub-installer/only_debian boolean true
 d-i grub-installer/with_other_os boolean true
-d-i grub-installer/bootdev string /dev/sda
+d-i grub-installer/bootdev string default
 
 ### Finishing up the installation
 d-i finish-install/reboot_in_progress note
diff --git a/profiles/expert.preseed b/profiles/expert.preseed
index 44f7d04..4e3c43b 100644
--- a/profiles/expert.preseed
+++ b/profiles/expert.preseed
@@ -97,7 +97,7 @@ debconf debconf/frontend select Noninteractive
 ### Boot loader installation
 d-i grub-installer/only_debian boolean true
 d-i grub-installer/with_other_os boolean true
-#d-i grub-installer/bootdev string /dev/sda
+#d-i grub-installer/bootdev string default
 
 ### Finishing up the installation
 d-i finish-install/reboot_in_progress note