diff --git a/naming/src/main/java/com/alibaba/nacos/naming/core/DomainsManager.java b/naming/src/main/java/com/alibaba/nacos/naming/core/DomainsManager.java
index 564cbea25..30dad3ee4 100644
--- a/naming/src/main/java/com/alibaba/nacos/naming/core/DomainsManager.java
+++ b/naming/src/main/java/com/alibaba/nacos/naming/core/DomainsManager.java
@@ -19,6 +19,7 @@ import com.alibaba.fastjson.JSON;
 import com.alibaba.fastjson.JSONArray;
 import com.alibaba.fastjson.JSONObject;
 import com.alibaba.fastjson.TypeReference;
+import com.alibaba.nacos.api.common.Constants;
 import com.alibaba.nacos.naming.misc.*;
 import com.alibaba.nacos.naming.push.PushService;
 import com.alibaba.nacos.naming.raft.Datum;
@@ -510,6 +511,10 @@ public class DomainsManager {
         public String namespaceId;
         public Map<String, String> domName2Checksum = new HashMap<String, String>();
 
+        public DomainChecksum() {
+            this.namespaceId = Constants.REQUEST_PARAM_DEFAULT_NAMESPACE_ID;
+        }
+
         public DomainChecksum(String namespaceId) {
             this.namespaceId = namespaceId;
         }