diff --git a/app/Http/Controllers/Web/ReceiptIssuingOrder/ConfirmController.php b/app/Http/Controllers/Web/ReceiptIssuingOrder/ConfirmController.php
index d3f5fda..9ba73f5 100644
--- a/app/Http/Controllers/Web/ReceiptIssuingOrder/ConfirmController.php
+++ b/app/Http/Controllers/Web/ReceiptIssuingOrder/ConfirmController.php
@@ -42,7 +42,7 @@ class ConfirmController extends WebController
             ->checkTimestamp($param->timestamp)
             ->fill(
                 [
-                    ReceiptIssuingOrder::COL_NAME_RECEIPT_NAME => $param->receiptName,
+                    ReceiptIssuingOrder::COL_NAME_RECEIPT_NAME => $param->receiptName ?? " ",
                 ]
             )
             ->setConfirm()
diff --git a/app/Http/Controllers/Web/ReceiptIssuingOrder/ConfirmParam.php b/app/Http/Controllers/Web/ReceiptIssuingOrder/ConfirmParam.php
index 8512ee0..1b843b2 100644
--- a/app/Http/Controllers/Web/ReceiptIssuingOrder/ConfirmParam.php
+++ b/app/Http/Controllers/Web/ReceiptIssuingOrder/ConfirmParam.php
@@ -8,7 +8,7 @@ use App\Models\ReceiptIssuingOrder;
 
 /**
  * @property string $accessToken
- * @property string $receiptName
+ * @property ?string $receiptName
  */
 
 class ConfirmParam extends BaseParam implements TimestampParam
@@ -18,7 +18,7 @@ class ConfirmParam extends BaseParam implements TimestampParam
         return array_merge(
             [
                 ReceiptIssuingOrder::COL_NAME_ACCESS_TOKEN => $this->str(),
-                ReceiptIssuingOrder::COL_NAME_RECEIPT_NAME => $this->str(),
+                ReceiptIssuingOrder::COL_NAME_RECEIPT_NAME => $this->str(true),
             ],
             $this->timestamp(),
         );