diff --git a/default.nix b/default.nix
index c6195a9..2f0a9f3 100644
--- a/default.nix
+++ b/default.nix
@@ -286,7 +286,6 @@ in
       default = true;
       description = ''
         Whether to activate dkim signing.
-        TODO: Explain how to put signature into domain record
       '';
     };