diff --git a/nix/nixos-module/container/dhcp-server.nix b/nix/nixos-module/container/dhcp-server.nix
index 1bccd73..c1340c7 100644
--- a/nix/nixos-module/container/dhcp-server.nix
+++ b/nix/nixos-module/container/dhcp-server.nix
@@ -53,10 +53,11 @@ in
                 ddns-domainname "${domainName}";
 
                 next-server ${config.site.net.serv.hosts4.netboot};
-                if option arch = 00:07 {
-                  filename "netboot.xyz.efi";
-                } else {
+                option arch code 93 = unsigned integer 16;
+                if option arch = 00:00 {
                   filename "netboot.xyz.kpxe";
+                } else {
+                  filename "netboot.xyz.efi";
                 }
 
                 subnet ${subnet4Net} netmask ${lib.netmasks.${toString subnet4Len}} {