diff --git a/app/data/service/PaymentService.php b/app/data/service/PaymentService.php
index 0fbd9738f..fbbd423e0 100644
--- a/app/data/service/PaymentService.php
+++ b/app/data/service/PaymentService.php
@@ -90,7 +90,7 @@ abstract class PaymentService extends Service
 
     /**
      * 支付通道编号
-     * @var integer
+     * @var string
      */
     protected static $code;