diff --git a/cmd/restic/cmd_prune.go b/cmd/restic/cmd_prune.go
index 3dbb266e8..11ebbb6ac 100644
--- a/cmd/restic/cmd_prune.go
+++ b/cmd/restic/cmd_prune.go
@@ -242,7 +242,7 @@ func printPruneStats(printer progress.Printer, stats repository.PruneStats) erro
 		printer.V("unreferenced:                    %s\n", ui.FormatBytes(stats.Size.Unref))
 	}
 	printer.V("total:        %10d blobs / %s\n", stats.Blobs.Total, ui.FormatBytes(stats.Size.Total))
-	printer.V("unused size: %s of total size\n", ui.FormatPercent(stats.Size.Unused, stats.Size.Total))
+	printer.V("unused size: %s of total size\n", ui.FormatPercent(stats.Size.Duplicate+stats.Size.Unused, stats.Size.Total))
 
 	printer.P("\nto repack:    %10d blobs / %s\n", stats.Blobs.Repack, ui.FormatBytes(stats.Size.Repack))
 	printer.P("this removes: %10d blobs / %s\n", stats.Blobs.Repackrm, ui.FormatBytes(stats.Size.Repackrm))
diff --git a/internal/repository/prune.go b/internal/repository/prune.go
index 8c9f22719..9ca188f73 100644
--- a/internal/repository/prune.go
+++ b/internal/repository/prune.go
@@ -156,10 +156,9 @@ func PlanPrune(ctx context.Context, opts PruneOptions, repo *Repository, getUsed
 	stats.Blobs.RemoveTotal = stats.Blobs.Remove + stats.Blobs.Repackrm
 	stats.Blobs.Remain = stats.Blobs.Total - stats.Blobs.RemoveTotal
 	stats.Size.Total = stats.Size.Used + stats.Size.Duplicate + stats.Size.Unused + stats.Size.Unref
-	stats.Size.Unused = stats.Size.Duplicate + stats.Size.Unused
 	stats.Size.RemoveTotal = stats.Size.Remove + stats.Size.Repackrm + stats.Size.Unref
 	stats.Size.Remain = stats.Size.Total - stats.Size.RemoveTotal
-	stats.Size.RemainUnused = stats.Size.Unused - stats.Size.Remove - stats.Size.Repackrm
+	stats.Size.RemainUnused = stats.Size.Duplicate + stats.Size.Unused - stats.Size.Remove - stats.Size.Repackrm
 	stats.Packs.Total = stats.Packs.Used + stats.Packs.PartlyUsed + stats.Packs.Unused + stats.Packs.Unref
 	stats.Packs.RemoveTotal = stats.Packs.Unref + stats.Packs.Remove