diff --git a/internal/querynode/index_info.go b/internal/querynode/index_info.go
index 01213fef29..bc36356017 100644
--- a/internal/querynode/index_info.go
+++ b/internal/querynode/index_info.go
@@ -35,6 +35,7 @@ func newIndexInfo() *indexInfo {
 	}
 }
 
+// setIndexName sets the name of index
 func (info *indexInfo) setIndexName(name string) {
 	info.indexName = name
 }