diff --git a/tsdb/compact.go b/tsdb/compact.go
index 3d8d9130c..b83649564 100644
--- a/tsdb/compact.go
+++ b/tsdb/compact.go
@@ -575,6 +575,7 @@ func (c *LeveledCompactor) Write(dest string, b BlockReader, mint, maxt int64, p
 		"maxt", meta.MaxTime,
 		"ulid", meta.ULID,
 		"duration", time.Since(start),
+		"ooo", meta.Compaction.FromOutOfOrder(),
 	)
 	return uid, nil
 }