diff --git a/classes/deck/node_db.gd b/classes/deck/node_db.gd
index 67e10cb..873a07b 100644
--- a/classes/deck/node_db.gd
+++ b/classes/deck/node_db.gd
@@ -50,8 +50,8 @@ func create_descriptors(path: String) -> void:
 				var script_path := path.path_join(current_file)
 				var node: DeckNode = load(script_path).new() as DeckNode
 				var aliases: String = node.aliases.reduce(
-					func(accum, el) -> void:
-						accum += el
+					func(accum, el):
+						return accum + el
 				, "")
 				var descriptor := NodeDescriptor.new(
 					script_path,