diff --git a/naming/src/main/java/com/alibaba/nacos/naming/controllers/InstanceController.java b/naming/src/main/java/com/alibaba/nacos/naming/controllers/InstanceController.java
index 3d9a11506..61e1b9afe 100644
--- a/naming/src/main/java/com/alibaba/nacos/naming/controllers/InstanceController.java
+++ b/naming/src/main/java/com/alibaba/nacos/naming/controllers/InstanceController.java
@@ -235,10 +235,6 @@ public class InstanceController {
 
         String clusterName = clientBeat.getCluster();
 
-        if (StringUtils.isBlank(clusterName)) {
-            clusterName = UtilsAndCommons.DEFAULT_CLUSTER_NAME;
-        }
-
         if (Loggers.DEBUG_LOG.isDebugEnabled()) {
             Loggers.DEBUG_LOG.debug("[CLIENT-BEAT] full arguments: beat: {}, serviceName: {}", clientBeat, serviceName);
         }