diff --git a/nix/modules/ionos-dyndns.nix b/nix/modules/ionos-dyndns.nix
index 5994c16..ac2e8c1 100644
--- a/nix/modules/ionos-dyndns.nix
+++ b/nix/modules/ionos-dyndns.nix
@@ -73,7 +73,7 @@ in {
       };
       interval = mkOption {
         type = types.str;
-        default = "14m";
+        default = "14min";
         description = "How often to run the update script in systemd.timers notation.";
       };
       serviceName = mkOption {