diff --git a/internal/backup/executor/executor.go b/internal/backup/executor/executor.go
index bbc1566..c869444 100644
--- a/internal/backup/executor/executor.go
+++ b/internal/backup/executor/executor.go
@@ -32,6 +32,7 @@ var backupModeBackoff = wait.Backoff{
 type Executor struct {
 	backupClient webserver.BackupClient
 
+	// TODO: these should be a getter that return an error if empty
 	BeginWal string
 	EndWal   string