diff --git a/modules/hosts/john-p14s/configuration.nix b/modules/hosts/john-p14s/configuration.nix
index f112553..adb3ae3 100644
--- a/modules/hosts/john-p14s/configuration.nix
+++ b/modules/hosts/john-p14s/configuration.nix
@@ -116,6 +116,9 @@
       sops.age.sshKeyPaths = [
         "${config.home-manager.users.john.home.homeDirectory}/.ssh/id_ed25519"
       ];
-      mtls.enable = true;
+      mtls = {
+        enable = true;
+        subject = hostname;
+      };
     };
 }