diff --git a/oap-server/server-configuration/configuration-api/src/main/java/org/apache/skywalking/oap/server/configuration/api/NoneConfigurationProvider.java b/oap-server/server-configuration/configuration-api/src/main/java/org/apache/skywalking/oap/server/configuration/api/NoneConfigurationProvider.java
index 633edcba1d5c..40894dd749ca 100644
--- a/oap-server/server-configuration/configuration-api/src/main/java/org/apache/skywalking/oap/server/configuration/api/NoneConfigurationProvider.java
+++ b/oap-server/server-configuration/configuration-api/src/main/java/org/apache/skywalking/oap/server/configuration/api/NoneConfigurationProvider.java
@@ -39,11 +39,7 @@ public class NoneConfigurationProvider extends ModuleProvider {
     }
 
     @Override public void prepare() throws ServiceNotProvidedException, ModuleStartException {
-        this.registerServiceImplementation(DynamicConfigurationService.class, new DynamicConfigurationService() {
-            @Override public void registerConfigChangeWatcher(ConfigChangeWatcher watcher) {
-
-            }
-        });
+        this.registerServiceImplementation(DynamicConfigurationService.class, (DynamicConfigurationService)watcher -> {});
     }
 
     @Override public void start() throws ServiceNotProvidedException, ModuleStartException {