diff --git a/talk.py b/talk.py
index 24e87ec..7dca59b 100644
--- a/talk.py
+++ b/talk.py
@@ -15,7 +15,7 @@ class Talk:
     top_p: int = 1
 
     @classmethod
-    def main (cls, message: str, name: str | None) -> str:
+    def main (cls, message: str, name: str | None = None) -> str:
         openai.organization = OPENAI_ORGANISATION
         openai.api_key = OPENAI_API_KEY