diff --git a/nixos/tests/minecraft-server.nix b/nixos/tests/minecraft-server.nix
index a51b36ff5308..6e733bb96c1c 100644
--- a/nixos/tests/minecraft-server.nix
+++ b/nixos/tests/minecraft-server.nix
@@ -18,6 +18,8 @@ in import ./make-test-python.nix ({ pkgs, ... }: {
       serverProperties = {
         enable-rcon = true;
         level-seed = seed;
+        level-type = "flat";
+        generate-structures = false;
         online-mode = false;
         "rcon.password" = rcon-pass;
         "rcon.port" = rcon-port;