diff --git a/rag/nlp/query.py b/rag/nlp/query.py
index 8b1400c31..9a6ecec2d 100644
--- a/rag/nlp/query.py
+++ b/rag/nlp/query.py
@@ -66,7 +66,7 @@ class FulltextQueryer:
 
     def question(self, txt, tbl="qa", min_match:float=0.6):
         txt = re.sub(
-            r"[ :\r\n\t,，。？?/`!！&\^%%]+",
+            r"[ :\r\n\t,，。？?/`!！&\^%%()^]+",
             " ",
             rag_tokenizer.tradi2simp(rag_tokenizer.strQ2B(txt.lower())),
         ).strip()