diff --git a/flake.nix b/flake.nix
index 29d586b..3abdaeb 100644
--- a/flake.nix
+++ b/flake.nix
@@ -46,7 +46,7 @@
                 type = "gpt";
                 partitions = {
                   bios_boot = {
-                    size = "2MiB";
+                    size = "2M";
                     type = "EF02"; # BIOS boot partition (unformatted)
                     content = null; # No filesystem
                   };