diff --git a/dubbo-metrics/dubbo-metrics-default/src/main/java/org/apache/dubbo/metrics/collector/AggregateMetricsCollector.java b/dubbo-metrics/dubbo-metrics-default/src/main/java/org/apache/dubbo/metrics/collector/AggregateMetricsCollector.java
index 286fa1dcd07..95b3f0809f7 100644
--- a/dubbo-metrics/dubbo-metrics-default/src/main/java/org/apache/dubbo/metrics/collector/AggregateMetricsCollector.java
+++ b/dubbo-metrics/dubbo-metrics-default/src/main/java/org/apache/dubbo/metrics/collector/AggregateMetricsCollector.java
@@ -66,7 +66,7 @@ public AggregateMetricsCollector(ApplicationModel applicationModel) {
         this.applicationModel = applicationModel;
         ConfigManager configManager = applicationModel.getApplicationConfigManager();
         MetricsConfig config = configManager.getMetrics().orElse(null);
-        if (config != null && config.getAggregation() != null && (config.getAggregation().getEnabled() == null || Boolean.TRUE.equals(config.getAggregation().getEnabled()))) {
+        if (config != null && config.getAggregation() != null && (Boolean.TRUE.equals(config.getAggregation().getEnabled()))) {
             // only registered when aggregation is enabled.
             registerListener();
 
diff --git a/dubbo-metrics/dubbo-metrics-default/src/test/java/org/apache/dubbo/metrics/collector/AggregateMetricsCollectorTest.java b/dubbo-metrics/dubbo-metrics-default/src/test/java/org/apache/dubbo/metrics/collector/AggregateMetricsCollectorTest.java
index 7bc56579b6b..0acdc4074fe 100644
--- a/dubbo-metrics/dubbo-metrics-default/src/test/java/org/apache/dubbo/metrics/collector/AggregateMetricsCollectorTest.java
+++ b/dubbo-metrics/dubbo-metrics-default/src/test/java/org/apache/dubbo/metrics/collector/AggregateMetricsCollectorTest.java
@@ -22,9 +22,7 @@
 import org.apache.dubbo.common.constants.CommonConstants;
 import org.apache.dubbo.common.utils.ReflectionUtils;
 import org.apache.dubbo.config.ApplicationConfig;
-
 import org.apache.dubbo.config.MetricsConfig;
-
 import org.apache.dubbo.config.context.ConfigManager;
 import org.apache.dubbo.config.nested.AggregationConfig;
 import org.apache.dubbo.metrics.TestMetricsInvoker;
@@ -39,27 +37,30 @@
 import org.apache.dubbo.rpc.RpcContext;
 import org.apache.dubbo.rpc.RpcInvocation;
 import org.apache.dubbo.rpc.model.ApplicationModel;
+
 import org.junit.jupiter.api.AfterEach;
 import org.junit.jupiter.api.Assertions;
 import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Test;
 
 import java.util.ArrayList;
+import java.util.Collections;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
-import java.util.Collections;
 import java.util.concurrent.ConcurrentHashMap;
-
 import java.util.stream.Collectors;
 
 import static org.apache.dubbo.common.constants.CommonConstants.GROUP_KEY;
 import static org.apache.dubbo.common.constants.CommonConstants.VERSION_KEY;
-import static org.apache.dubbo.common.constants.MetricsConstants.*;
+import static org.apache.dubbo.common.constants.MetricsConstants.TAG_GROUP_KEY;
+import static org.apache.dubbo.common.constants.MetricsConstants.TAG_INTERFACE_KEY;
+import static org.apache.dubbo.common.constants.MetricsConstants.TAG_METHOD_KEY;
+import static org.apache.dubbo.common.constants.MetricsConstants.TAG_VERSION_KEY;
 import static org.apache.dubbo.metrics.model.MetricsCategory.QPS;
 import static org.mockito.Mockito.mock;
-import static org.mockito.Mockito.when;
 import static org.mockito.Mockito.spy;
+import static org.mockito.Mockito.when;
 
 class AggregateMetricsCollectorTest {
 
@@ -93,7 +94,9 @@ public static AggregateMetricsCollector getTestCollector() {
 
         configManager.setMetrics(metricsConfig);
 
-        when(metricsConfig.getAggregation()).thenReturn(new AggregationConfig());
+        AggregationConfig aggregationConfig = spy(new AggregationConfig());
+        when(aggregationConfig.getEnabled()).thenReturn(true);
+        when(metricsConfig.getAggregation()).thenReturn(aggregationConfig);
         when(applicationModel.getApplicationConfigManager()).thenReturn(configManager);
 
         ScopeBeanFactory beanFactory = mock(ScopeBeanFactory.class);