diff --git a/services/nix-serve.nix b/services/nix-serve.nix
index 816e3495..ff99abe1 100644
--- a/services/nix-serve.nix
+++ b/services/nix-serve.nix
@@ -3,6 +3,7 @@
   services.nix-serve = {
     enable = true;
     openFirewall = true;
+    secretKeyFile = "/root/nix-serve.key";
   };
-  services.caddy.virtualHosts."nix.xenia.me.uk".extraConfig = "reverse_proxy http://localhost:${config.services.nix-serve.port}";
+  services.caddy.virtualHosts."nix.xenia.me.uk".extraConfig = "reverse_proxy http://localhost:${toString config.services.nix-serve.port}";
 }