diff --git a/tools/perf/util/session.c b/tools/perf/util/session.c
index 61746b5866d81d6b494be4dbca2916af1fc38b31..db652068c3963b3fcaa6926712760a1d622bb86a 100644
--- a/tools/perf/util/session.c
+++ b/tools/perf/util/session.c
@@ -1018,9 +1018,6 @@ int __perf_session__process_events(struct perf_session *session,
 
 	if (session->header.needs_swap)
 		perf_event_header__bswap(&event->header);
-	size = event->header.size;
-	if (size == 0)
-		size = 8;
 
 	if (head + event->header.size > mmap_size) {
 		if (mmaps[map_idx]) {