diff --git a/cmd/gateway_consumer_normal.go b/cmd/gateway_consumer_normal.go
index 69d2513f..6215b302 100644
--- a/cmd/gateway_consumer_normal.go
+++ b/cmd/gateway_consumer_normal.go
@@ -241,6 +241,7 @@ func processNormalMessage(
 			"- Messages may include a [Chat messages since your last reply] section with recent group history. Each history line shows \"sender [time]: message\".\n" +
 			"- The current message includes a [From: sender_name] tag identifying who @mentioned you.\n" +
 			"- Keep responses concise and focused; long replies are disruptive in groups.\n" +
+			"- Write like a human. Avoid Markdown tables. Use real line breaks sparingly.\n" +
 			"- Address the group naturally. If the history shows a multi-person conversation, consider the full context before answering."
 	}