diff --git a/nix/nixos-module/container/dhcp-server.nix b/nix/nixos-module/container/dhcp-server.nix
index 0110f9e..0e50c99 100644
--- a/nix/nixos-module/container/dhcp-server.nix
+++ b/nix/nixos-module/container/dhcp-server.nix
@@ -63,7 +63,7 @@ in
                   # RPi4
                   option vendor-class-identifier "PXEClient";
                   option vendor-encapsulated-options "Raspberry Pi Boot";
-                  option tftp-server-name "${config.site.net.serv.hosts4.netboot}";
+                  option tftp-server-name "${config.site.net.serv.hosts4.nix-build}";
                 }
 
                 subnet ${subnet4Net} netmask ${lib.netmasks.${toString subnet4Len}} {