diff --git a/internal/util/mqclient/rmq_producer.go b/internal/util/mqclient/rmq_producer.go
index ef1a613298..7ca9dba225 100644
--- a/internal/util/mqclient/rmq_producer.go
+++ b/internal/util/mqclient/rmq_producer.go
@@ -19,6 +19,7 @@ import (
 
 var _ Producer = (*rmqProducer)(nil)
 
+// rmqProducer contains a rocksmq producer
 type rmqProducer struct {
 	p rocksmq.Producer
 }