diff --git a/weixin4j-wxa/src/main/java/com/foxinmy/weixin4j/wxa/api/SubscribeMessageParameter.java b/weixin4j-wxa/src/main/java/com/foxinmy/weixin4j/wxa/api/SubscribeMessageParameter.java
index 1a683f96..f7c07fb2 100644
--- a/weixin4j-wxa/src/main/java/com/foxinmy/weixin4j/wxa/api/SubscribeMessageParameter.java
+++ b/weixin4j-wxa/src/main/java/com/foxinmy/weixin4j/wxa/api/SubscribeMessageParameter.java
@@ -6,7 +6,7 @@ import java.io.Serializable;
 import java.util.HashMap;
 import java.util.Map;
 
-public class SubscribeMessageParameter {
+class SubscribeMessageParameter {
 
 	private static final long serialVersionUID = 2018052601L;