diff --git a/src/game/engine/src/modules/ai/simple_heuristic_ai.gd b/src/game/engine/src/modules/ai/simple_heuristic_ai.gd
index 2f096e85..8689965b 100644
--- a/src/game/engine/src/modules/ai/simple_heuristic_ai.gd
+++ b/src/game/engine/src/modules/ai/simple_heuristic_ai.gd
@@ -463,7 +463,7 @@ static func _pick_happiness_building_id(
 	var best_id: String = ""
 	var best_happiness: int = 0
 	for b: Dictionary in DataLoader.get_all_buildings():
-		var bid: String = String(b.get("id", ""))
+		var bid: String = str(b.get("id", ""))
 		if bid.is_empty() or bid in existing:
 			continue
 		if not _can_build(b, player):
@@ -504,10 +504,10 @@ static func _pick_building_id(city: RefCounted) -> String:
 	# Skip buildings handled by priority logic
 	var skip: Array = ["walls", "forge", "castle"]
 	for b: Dictionary in DataLoader.get_all_buildings():
-		var bid: String = String(b.get("id", ""))
+		var bid: String = str(b.get("id", ""))
 		if bid.is_empty() or bid in existing or bid in skip:
 			continue
-		if not String(b.get("tech_required", "")).is_empty():
+		if not str(b.get("tech_required", "")).is_empty():
 			continue
 		if b.get("wonder_type") != null:
 			continue