diff --git a/machines/chungus/media-share.nix b/machines/chungus/media-share.nix
index 7e8e654..c4c4751 100644
--- a/machines/chungus/media-share.nix
+++ b/machines/chungus/media-share.nix
@@ -15,7 +15,7 @@
     samples = "/media/samples";
   };
 
-  users.users.mainUser.extraGroups = "media";
+  users.users.mainUser.extraGroups = [ "media" ];
   users.groups."media".gid = config.ids.gids.transmission;
   users.users."media" = {
     uid = config.ids.uids.transmission;