diff --git a/hosts/nullbox/mcserver.nix b/hosts/nullbox/mcserver.nix
index f96afd9..069fd7b 100644
--- a/hosts/nullbox/mcserver.nix
+++ b/hosts/nullbox/mcserver.nix
@@ -61,7 +61,7 @@ in
             "query.port" = 25567;
 
             # more declarative
-            seed = "8555431723250870652";
+            level-seed = "8555431723250870652";
             level-type = "bclib:normal";
           };