diff --git a/weixin-java-miniapp/src/main/java/cn/binarywang/wx/miniapp/bean/WxMaJscode2SessionResult.java b/weixin-java-miniapp/src/main/java/cn/binarywang/wx/miniapp/bean/WxMaJscode2SessionResult.java
index 7d3e2d8de..85b476770 100644
--- a/weixin-java-miniapp/src/main/java/cn/binarywang/wx/miniapp/bean/WxMaJscode2SessionResult.java
+++ b/weixin-java-miniapp/src/main/java/cn/binarywang/wx/miniapp/bean/WxMaJscode2SessionResult.java
@@ -8,8 +8,11 @@ import lombok.EqualsAndHashCode;
 import java.io.Serializable;
 
 /**
- * {"session_key":"nzoqhc3OnwHzeTxJs+inbQ==","expires_in":2592000,"openid":"oVBkZ0aYgDMDIywRdgPW8-joxXc4"}
- *
+ * <pre>
+ * code换取session_key接口的响应
+ * 文档地址：https://mp.weixin.qq.com/debug/wxadoc/dev/api/api-login.html#wxloginobject
+ * 微信返回报文：{"session_key":"nzoqhc3OnwHzeTxJs+inbQ==","openid":"oVBkZ0aYgDMDIywRdgPW8-joxXc4"}
+ * </pre>
  * @author <a href="https://github.com/binarywang">Binary Wang</a>
  */
 @Data
@@ -20,9 +23,6 @@ public class WxMaJscode2SessionResult implements Serializable {
   @SerializedName("session_key")
   private String sessionKey;
 
-  @SerializedName("expires_in")
-  private Integer expiresin;
-
   @SerializedName("openid")
   private String openid;