diff --git a/modules/clan/phonebox/default.nix b/modules/clan/phonebox/default.nix
index 7ab71a3..d104eef 100644
--- a/modules/clan/phonebox/default.nix
+++ b/modules/clan/phonebox/default.nix
@@ -14,6 +14,11 @@
           description = "An Ethernet interface that connect to ATA box.";
           default = "enp2s0";
         };
+        options.ownerName = lib.mkOption {
+          type = lib.types.str;
+          description = "The owner's name for this unit";
+          default = "";
+        };
       };
     perInstance =
       {