diff --git a/pkgs/pxescript/default.nix b/pkgs/pxescript/default.nix
index 4e35bd9..78fa53e 100644
--- a/pkgs/pxescript/default.nix
+++ b/pkgs/pxescript/default.nix
@@ -30,7 +30,7 @@ runCommand "netboot" {
 
     :option_one
     kernel http://''${server}/''${path}/${pkgs.stdenv.hostPlatform.linux-kernel.target}
-    ${builtins.concatStringsSep "\n" (builtins.attrValues (builtins.mapAttrs (name: path: "initrd http://''${server}/''${path}/${name}") initrds))}
+    ${builtins.concatStringsSep "\n" (builtins.attrValues (builtins.mapAttrs (name: path: "initrd http://\${server}/''\${path}/${name}") initrds))}
     #initrd http://''${server}/''${path}/initrd
     #initrd http://''${server}/''${path}/manifest
     #initrd http://''${server}/''${path}/nix-store