diff --git a/backend/src/func/issueInvoice.ts b/backend/src/func/issueInvoice.ts
index 70eb75a..749256d 100644
--- a/backend/src/func/issueInvoice.ts
+++ b/backend/src/func/issueInvoice.ts
@@ -24,20 +24,14 @@ export default async (prisma: PrismaClient, payerId: number, period: Date[], ite
 	if (!payer) throw new HttpError(ErrorDescEnum.related_item_not_found, 400, ['payer_id'])
 
 	// 创建新收据
-	const newInvoice = new Invoice(
-		0,
-		new Date(),
-		period,
-		items,
-		dueDate,
-		{
-			id: payer.payer_id,
-			name: payer.payer_name,
-			address: payer.payer_address,
-			abn: payer.payer_abn ? payer.payer_abn : undefined,
-			email: payer.payer_email
-		}
-	)
+	const payerInfo = {
+		id: payer.payer_id,
+		name: payer.payer_name,
+		address: payer.payer_address,
+		abn: payer.payer_abn ? payer.payer_abn : undefined,
+		email: payer.payer_email
+	}
+	const newInvoice = new Invoice(0, new Date(), period, items, dueDate, payerInfo)
 	if (note) await newInvoice.setNote(note)
 	await newInvoice.save(prisma)
 }
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