diff --git a/pkg/backup/client.go b/pkg/backup/client.go
index 90f4e5298..24aef8a53 100644
--- a/pkg/backup/client.go
+++ b/pkg/backup/client.go
@@ -992,3 +992,4 @@ func CollectChecksums(backupMeta *kvproto.BackupMeta) ([]Checksum, error) {
 func isRetryableError(err error) bool {
 	return status.Code(err) == codes.Unavailable || status.Code(err) == codes.Canceled
 }
+