diff --git a/dubbo-configcenter/dubbo-configcenter-zookeeper/src/main/java/org/apache/dubbo/configcenter/support/zookeeper/CacheListener.java b/dubbo-configcenter/dubbo-configcenter-zookeeper/src/main/java/org/apache/dubbo/configcenter/support/zookeeper/CacheListener.java
index 4f6c6382952..3eaa96b28a9 100644
--- a/dubbo-configcenter/dubbo-configcenter-zookeeper/src/main/java/org/apache/dubbo/configcenter/support/zookeeper/CacheListener.java
+++ b/dubbo-configcenter/dubbo-configcenter-zookeeper/src/main/java/org/apache/dubbo/configcenter/support/zookeeper/CacheListener.java
@@ -35,6 +35,8 @@
  */
 
 public class CacheListener implements DataListener {
+    private static final int MIN_PATH_DEPTH = 5;
+
     private Map<String, Set<ConfigurationListener>> keyListeners = new ConcurrentHashMap<>();
     private CountDownLatch initializedLatch;
     private String rootPath;
@@ -89,7 +91,7 @@ public void dataChanged(String path, Object value, EventType eventType) {
         // TODO We limit the notification of config changes to a specific path level, for example
         //  /dubbo/config/service/configurators, other config changes not in this level will not get notified,
         //  say /dubbo/config/dubbo.properties
-        if (path.split("/").length >= 5) {
+        if (path.split("/").length >= MIN_PATH_DEPTH) {
             String key = pathToKey(path);
             ConfigChangeType changeType;
             switch (eventType) {