diff --git a/internal/ui/backup.go b/internal/ui/backup.go
index 3a950d9ad..18f9f4f93 100644
--- a/internal/ui/backup.go
+++ b/internal/ui/backup.go
@@ -49,6 +49,7 @@ type Backup struct {
 			Changed   uint
 			Unchanged uint
 		}
+		ProcessedBytes uint64
 		archiver.ItemStats
 	}
 }
@@ -259,6 +260,12 @@ func formatBytes(c uint64) string {
 func (b *Backup) CompleteItemFn(item string, previous, current *restic.Node, s archiver.ItemStats, d time.Duration) {
 	b.summary.Lock()
 	b.summary.ItemStats.Add(s)
+
+	// for the last item "/", current is nil
+	if current != nil {
+		b.summary.ProcessedBytes += current.Size
+	}
+
 	b.summary.Unlock()
 
 	if current == nil {
@@ -361,7 +368,7 @@ func (b *Backup) Finish() {
 	b.P("\n")
 	b.P("processed %v files, %v in %s",
 		b.summary.Files.New+b.summary.Files.Changed+b.summary.Files.Unchanged,
-		formatBytes(b.totalBytes),
+		formatBytes(b.summary.ProcessedBytes),
 		formatDuration(time.Since(b.start)),
 	)
 }