diff --git a/weixin-java-pay/src/main/java/com/github/binarywang/wxpay/config/WxPayConfig.java b/weixin-java-pay/src/main/java/com/github/binarywang/wxpay/config/WxPayConfig.java
index cd07619f5..2769e2201 100644
--- a/weixin-java-pay/src/main/java/com/github/binarywang/wxpay/config/WxPayConfig.java
+++ b/weixin-java-pay/src/main/java/com/github/binarywang/wxpay/config/WxPayConfig.java
@@ -130,10 +130,12 @@ public class WxPayConfig {
    * 私钥信息
    */
   private PrivateKey privateKey;
+
   /**
    * 证书自动更新时间差(分钟)，默认一分钟
    */
   private int certAutoUpdateTime = 60;
+
   /**
    * p12证书文件内容的字节数组.
    */