diff --git a/tools/perf/builtin-script.c b/tools/perf/builtin-script.c
index 6ef65c0..43480fd 100644
--- a/tools/perf/builtin-script.c
+++ b/tools/perf/builtin-script.c
@@ -117,6 +117,7 @@
 	.tracing_data = event__process_tracing_data,
 	.build_id = event__process_build_id,
 	.lost = process_lost_event,
+	.ordering_requires_timestamps = true,
 	.ordered_samples = true,
 };