diff --git a/src/directives/chatbot.ts b/src/directives/chatbot.ts
index bd64316..ce865e5 100644
--- a/src/directives/chatbot.ts
+++ b/src/directives/chatbot.ts
@@ -91,7 +91,7 @@ export const chatbot = {
 
             return createUserMessage({
               content,
-              name: serverNickname,
+              name: serverNickname.length > 0 ? serverNickname : undefined,
             });
           }),
         )