diff --git a/tools/perf/util/intel-bts.c b/tools/perf/util/intel-bts.c
index 0b18ebd13f7c..02df3e460489 100644
--- a/tools/perf/util/intel-bts.c
+++ b/tools/perf/util/intel-bts.c
@@ -830,7 +830,7 @@ int intel_bts_process_auxtrace_info(union perf_event *event,
 				    struct perf_session *session)
 {
 	struct perf_record_auxtrace_info *auxtrace_info = &event->auxtrace_info;
-	size_t min_sz = sizeof(u64) * INTEL_BTS_SNAPSHOT_MODE;
+	size_t min_sz = sizeof(u64) * (INTEL_BTS_SNAPSHOT_MODE + 1);
 	struct intel_bts *bts;
 	int err;