diff --git a/nixos/modules/services/mail/stalwart-mail.nix b/nixos/modules/services/mail/stalwart-mail.nix
index 42198573ec09..3db63f0a6e06 100644
--- a/nixos/modules/services/mail/stalwart-mail.nix
+++ b/nixos/modules/services/mail/stalwart-mail.nix
@@ -31,7 +31,7 @@ in
       default = false;
       description = ''
         Whether to open TCP firewall ports, which are specified in
-        {option}`services.stalwart-mail.settings.listener` on all interfaces.
+        {option}`services.stalwart-mail.settings.server.listener` on all interfaces.
       '';
     };