diff --git a/rag/llm/chat_model.py b/rag/llm/chat_model.py
index 4da841bd1..98f6ce641 100644
--- a/rag/llm/chat_model.py
+++ b/rag/llm/chat_model.py
@@ -116,6 +116,7 @@ class ZhipuChat(Base):
         if system:
             history.insert(0, {"role": "system", "content": system})
         try:
+            if "presence_penalty" in gen_conf: del gen_conf["presence_penalty"]
             response = self.client.chat.completions.create(
                 model=self.model_name,
                 messages=history,