diff --git a/internal/querycoord/query_coord.go b/internal/querycoord/query_coord.go
index 8fa2b03de2..b151110c05 100644
--- a/internal/querycoord/query_coord.go
+++ b/internal/querycoord/query_coord.go
@@ -147,6 +147,7 @@ func (qc *QueryCoord) Start() error {
 	return nil
 }
 
+// Stop function stops watching the meta and node updates
 func (qc *QueryCoord) Stop() error {
 	qc.scheduler.Close()
 	log.Debug("close scheduler ...")