1 files changed, 1 insertions, 0 deletions

diff --git a/tools/perf/util/session.c b/tools/perf/util/session.c
index db652068c396..8940fd871eae 100644
--- a/tools/perf/util/session.c
+++ b/tools/perf/util/session.c
@@ -97,6 +97,7 @@ out:
 void perf_session__update_sample_type(struct perf_session *self)
 {
         self->sample_type = perf_evlist__sample_type(self->evlist);
+        self->sample_size = perf_sample_size(self->sample_type);
         self->sample_id_all = perf_evlist__sample_id_all(self->evlist);
         perf_session__id_header_size(self);
 }