diff --git a/lib/subaccount.rb b/lib/subaccount.rb
index f40e4083515a42872fb020264419dd836b47857c..033de42bcac7312a87960df0fd0b13521f532042 100644
--- a/lib/subaccount.rb
+++ b/lib/subaccount.rb
@@ -9,6 +9,8 @@ class Subaccount
 		DB.query_defer(<<~SQL, [parent_id])
 			SELECT customer_id FROM customer_plans WHERE parent_customer_id=$1
 	  SQL
-			.then { |rows| rows.map { |row| Subaccount.new(**row) } }
+			.then { |rows|
+				rows.map { |row| Subaccount.new(customer_id: row["customer_id"]) }
+			}
 	end
 end