diff --git a/nixos/modules/services/networking/tftpd.nix b/nixos/modules/services/networking/tftpd.nix
index 9b3cc6b8ec4..a41d2491a11 100644
--- a/nixos/modules/services/networking/tftpd.nix
+++ b/nixos/modules/services/networking/tftpd.nix
@@ -13,6 +13,7 @@ with lib;
       default = false;
       description = ''
         Whether to enable tftpd, a Trivial File Transfer Protocol server.
+        The server will be run as an xinetd service.
       '';
     };