diff --git a/fastchat/llm_judge/gen_api_answer.py b/fastchat/llm_judge/gen_api_answer.py
index b39618546..484e8fe88 100644
--- a/fastchat/llm_judge/gen_api_answer.py
+++ b/fastchat/llm_judge/gen_api_answer.py
@@ -1,7 +1,7 @@
 """Generate answers with GPT-4
 
 Usage:
-python3 get_api_answer.py --model gpt-3.5-turbo
+python3 gen_api_answer.py --model gpt-3.5-turbo
 """
 import argparse
 import json