diff --git a/example/gpt-bios-compat.nix b/example/gpt-bios-compat.nix
index 4be1942..d3955eb 100644
--- a/example/gpt-bios-compat.nix
+++ b/example/gpt-bios-compat.nix
@@ -11,6 +11,7 @@
             boot = {
               size = "1M";
               type = "EF02"; # for grub MBR
+              attributes = [ 0 ]; # partition attribute
             };
             root = {
               size = "100%";