diff --git a/lib/fudo/auth/kerberos/default.nix b/lib/fudo/auth/kerberos/default.nix
index e6b1050..8d7ec54 100644
--- a/lib/fudo/auth/kerberos/default.nix
+++ b/lib/fudo/auth/kerberos/default.nix
@@ -6,7 +6,7 @@ in {
   imports = [ ./kdc.nix ];
 
   config = {
-    krb5 = {
+    security.krb5 = {
       enable = true;
       kerberos = pkgs.heimdal;
       libdefaults = {