diff --git a/docs/source/developers/index.md b/docs/source/developers/index.md
index 5a9ece918..b8d21c01b 100644
--- a/docs/source/developers/index.md
+++ b/docs/source/developers/index.md
@@ -30,7 +30,7 @@ class CustomChatHandler(BaseChatHandler):
     def __init__(self, *args, **kwargs):
         super().__init__(*args, **kwargs)
 
-    async def _process_message(self, message: HumanChatMessage):
+    async def process_message(self, message: HumanChatMessage):
         # Put your custom logic here
 ```