diff --git a/metagpt/document_store/faiss_store.py b/metagpt/document_store/faiss_store.py
index 46b959d81..55c07b920 100644
--- a/metagpt/document_store/faiss_store.py
+++ b/metagpt/document_store/faiss_store.py
@@ -38,11 +38,7 @@ class FaissStore(LocalStore):
         return store
 
     def _write(self, docs, metadatas):
-        store = FAISS.from_texts(
-            docs,
-            OpenAIEmbeddings(openai_api_version="2020-11-07"),
-            metadatas=metadatas,
-        )
+        store = FAISS.from_texts(docs, OpenAIEmbeddings(openai_api_version="2020-11-07"), metadatas=metadatas)
         return store
 
     def persist(self):