diff --git a/lib/fudo/minecraft-clj.nix b/lib/fudo/minecraft-clj.nix
index a06bbf1..9e8af2d 100644
--- a/lib/fudo/minecraft-clj.nix
+++ b/lib/fudo/minecraft-clj.nix
@@ -71,7 +71,7 @@ in {
   config = mkIf cfg.enable {
     users = {
       users."${cfg.user}" = {
-        isSystemUser = false;
+        isSystemUser = true;
         home = cfg.data-dir;
         group = cfg.group;
         createHome = true;