diff --git a/preseed.cfg b/preseed.cfg
index e67f06c..a572474 100644
--- a/preseed.cfg
+++ b/preseed.cfg
@@ -311,6 +311,7 @@ d-i partman/choose_partition select finish
 d-i partman/confirm boolean true
 d-i partman/confirm_nooverwrite boolean true
 
+d-i partman-efi/non_efi_system boolean false
 d-i partman-partitioning/choose_label string msdos
 d-i partman-partitioning/default_label string msdos