diff --git a/remoting/remoting-bolt/src/test/java/com/alipay/sofa/rpc/codec/bolt/BoltSerializationInitTest.java b/remoting/remoting-bolt/src/test/java/com/alipay/sofa/rpc/codec/bolt/BoltSerializationInitTest.java
index f1155e724..2d36fa010 100644
--- a/remoting/remoting-bolt/src/test/java/com/alipay/sofa/rpc/codec/bolt/BoltSerializationInitTest.java
+++ b/remoting/remoting-bolt/src/test/java/com/alipay/sofa/rpc/codec/bolt/BoltSerializationInitTest.java
@@ -31,6 +31,9 @@
  */
 public class BoltSerializationInitTest {
 
+    /**
+     * add a serializer to override existing serializer
+     */
     @Test
     public void testSerializerRegisterOverride() {
         AbstractSerializationRegister abstractSerializationRegister = ExtensionLoaderFactory.getExtensionLoader(