diff --git a/nixarr/jellyfin/default.nix b/nixarr/jellyfin/default.nix
index b2c24d4..88a9a61 100644
--- a/nixarr/jellyfin/default.nix
+++ b/nixarr/jellyfin/default.nix
@@ -38,7 +38,7 @@ in {
           authentication through localhost first!
         '';
 
-        port = {
+        port = mkOption {
           type = with types; nullOr port;
           default = null;
           description = ''