diff --git a/comps/retrievers/redis/langchain/retriever_redis.py b/comps/retrievers/redis/langchain/retriever_redis.py
index b9b317c4a..5eb06098b 100644
--- a/comps/retrievers/redis/langchain/retriever_redis.py
+++ b/comps/retrievers/redis/langchain/retriever_redis.py
@@ -11,11 +11,11 @@
 from redis_config import EMBED_MODEL, INDEX_NAME, REDIS_URL
 
 from comps import (
-    EmbedMultimodalDoc,
-    SearchedMultimodalDoc,
     CustomLogger,
     EmbedDoc,
+    EmbedMultimodalDoc,
     SearchedDoc,
+    SearchedMultimodalDoc,
     ServiceType,
     TextDoc,
     opea_microservices,
@@ -103,7 +103,7 @@ async def retrieve(
             metadata_list.append(r.metadata)
             retrieved_docs.append(TextDoc(text=r.page_content))
         result = SearchedMultimodalDoc(retrieved_docs=retrieved_docs, initial_query=input.text, metadata=metadata_list)
-    
+
     else:
         for r in search_res:
             retrieved_docs.append(RetrievalResponseData(text=r.page_content, metadata=r.metadata))