diff --git a/src/arcologyBuilding/base.js b/src/arcologyBuilding/base.js
index 40483a5085e033bc25aa34e9a22129eeeb543eed..e4173a8efd9c7d2f3efe80d1e29b2a896da2d42b 100644
--- a/src/arcologyBuilding/base.js
+++ b/src/arcologyBuilding/base.js
@@ -44,7 +44,7 @@ App.Arcology.defaultBuilding = function(terrain = "default") {
 	 */
 	const env = {terrain: terrain, established: false, fs: ""};
 	const candidates = App.Arcology.presets.filter(preset => preset.isAllowed(env));
-	return candidates.pluck().construct(env);
+	return candidates.pluck().construct(env).building;
 };
 
 /**