diff --git a/internal/querynode/load_index_info.go b/internal/querynode/load_index_info.go
index f7d410291e..f418b6f062 100644
--- a/internal/querynode/load_index_info.go
+++ b/internal/querynode/load_index_info.go
@@ -53,6 +53,7 @@ func deleteLoadIndexInfo(info *LoadIndexInfo) {
 	C.DeleteLoadIndexInfo(info.cLoadIndexInfo)
 }
 
+// appendIndexParam append indexParam to index
 func (li *LoadIndexInfo) appendIndexParam(indexKey string, indexValue string) error {
 	cIndexKey := C.CString(indexKey)
 	defer C.free(unsafe.Pointer(cIndexKey))