diff --git a/weixin-java-pay/src/main/java/com/github/binarywang/wxpay/bean/result/WxSignQueryResult.java b/weixin-java-pay/src/main/java/com/github/binarywang/wxpay/bean/result/WxSignQueryResult.java
index b4af82937..808b9d7dd 100644
--- a/weixin-java-pay/src/main/java/com/github/binarywang/wxpay/bean/result/WxSignQueryResult.java
+++ b/weixin-java-pay/src/main/java/com/github/binarywang/wxpay/bean/result/WxSignQueryResult.java
@@ -30,7 +30,7 @@ public class WxSignQueryResult extends BaseWxPayResult implements Serializable {
   /**
    * 委托代扣协议ID
    */
-  @XStreamAlias("contractId")
+  @XStreamAlias("contract_id")
   private String contractId;
 
   /**