diff --git a/src/toOpenAIMessages.ts b/src/toOpenAIMessages.ts
index 3ee9ee8..f93d235 100644
--- a/src/toOpenAIMessages.ts
+++ b/src/toOpenAIMessages.ts
@@ -88,7 +88,8 @@ function getAuthorUsername(message: DiscordMessage): string | undefined {
     if (name.length >= 3) return name;
   }
   const name = formatName(message.author.username);
-  return name;
+  if (name.length > 0) return name;
+  return message.author.id;
 }
 
 /**