diff --git a/tieredstore/src/test/java/org/apache/rocketmq/tieredstore/core/MessageStoreDispatcherImplTest.java b/tieredstore/src/test/java/org/apache/rocketmq/tieredstore/core/MessageStoreDispatcherImplTest.java
index 6b960769489..7a43e1ede83 100644
--- a/tieredstore/src/test/java/org/apache/rocketmq/tieredstore/core/MessageStoreDispatcherImplTest.java
+++ b/tieredstore/src/test/java/org/apache/rocketmq/tieredstore/core/MessageStoreDispatcherImplTest.java
@@ -106,6 +106,7 @@ public void dispatchFromCommitLogTest() throws Exception {
         Mockito.when(messageStore.getStoreExecutor()).thenReturn(executor);
         Mockito.when(messageStore.getFlatFileStore()).thenReturn(fileStore);
         Mockito.when(messageStore.getIndexService()).thenReturn(indexService);
+        Mockito.when(messageStore.getMessageStoreConfig()).thenReturn(new org.apache.rocketmq.store.config.MessageStoreConfig());
 
         // mock message
         ByteBuffer buffer = MessageFormatUtilTest.buildMockedMessageBuffer();