diff --git a/src/memos/api/handlers/chat_handler.py b/src/memos/api/handlers/chat_handler.py
index 9b0048ed..f6023e5c 100644
--- a/src/memos/api/handlers/chat_handler.py
+++ b/src/memos/api/handlers/chat_handler.py
@@ -116,7 +116,7 @@ def handle_chat_complete(self, chat_req: APIChatCompleteRequest) -> dict[str, An
                 query=chat_req.query,
                 top_k=chat_req.top_k or 10,
                 session_id=chat_req.session_id,
-                mode=SearchMode.FINE,
+                mode=SearchMode.FAST,
                 internet_search=chat_req.internet_search,
                 moscube=chat_req.moscube,
                 chat_history=chat_req.history,
@@ -213,8 +213,8 @@ def generate_chat_response() -> Generator[str, None, None]:
                         query=chat_req.query,
                         top_k=20,
                         session_id=chat_req.session_id,
-                        mode=SearchMode.FINE,
-                        internet_search=chat_req.internet_search,
+                        mode=SearchMode.FINE if chat_req.internet_search else SearchMode.FAST,
+                        internet_search=chat_req.internet_search,  # TODO this param is not worked at fine mode
                         moscube=chat_req.moscube,
                         chat_history=chat_req.history,
                     )
diff --git a/src/memos/api/handlers/search_handler.py b/src/memos/api/handlers/search_handler.py
index 9fc8a5b2..e8e4e07d 100644
--- a/src/memos/api/handlers/search_handler.py
+++ b/src/memos/api/handlers/search_handler.py
@@ -245,7 +245,7 @@ def _fine_search(
             query=search_req.query,
             user_name=user_context.mem_cube_id,
             top_k=search_req.top_k,
-            mode=SearchMode.FAST,
+            mode=SearchMode.FINE,
             manual_close_internet=not search_req.internet_search,
             moscube=search_req.moscube,
             search_filter=search_filter,
diff --git a/src/memos/memories/textual/tree_text_memory/retrieve/searcher.py b/src/memos/memories/textual/tree_text_memory/retrieve/searcher.py
index f196c556..14ea8e2c 100644
--- a/src/memos/memories/textual/tree_text_memory/retrieve/searcher.py
+++ b/src/memos/memories/textual/tree_text_memory/retrieve/searcher.py
@@ -182,7 +182,7 @@ def _parse_task(
         query_embedding = None
 
         # fine mode will trigger initial embedding search
-        if mode == "fine":
+        if mode == "fine_old":
             logger.info("[SEARCH] Fine mode: embedding search")
             query_embedding = self.embedder.embed([query])[0]