diff --git a/src/memos/multi_mem_cube/single_cube.py b/src/memos/multi_mem_cube/single_cube.py
index 6df410c19..6a91f436f 100644
--- a/src/memos/multi_mem_cube/single_cube.py
+++ b/src/memos/multi_mem_cube/single_cube.py
@@ -617,7 +617,7 @@ def add_before_search(
 
         # 3. Call LLM
         try:
-            raw = self.mem_reader.llm.generate([{"role": "user", "content": prompt}])
+            raw = self.mem_reader.general_llm.generate([{"role": "user", "content": prompt}])
             success, parsed_result = parse_keep_filter_response(raw)
 
             if not success: