diff --git a/tools/perf/builtin-kvm.c b/tools/perf/builtin-kvm.c
index 3c0f3d4fb021..0894a817f67e 100644
--- a/tools/perf/builtin-kvm.c
+++ b/tools/perf/builtin-kvm.c
@@ -1293,7 +1293,8 @@ static int kvm_events_live(struct perf_kvm_stat *kvm,
 		OPT_UINTEGER('d', "display", &kvm->display_time,
 			"time in seconds between display updates"),
 		OPT_STRING(0, "event", &kvm->report_event, "report event",
-			"event for reporting: vmexit, mmio, ioport"),
+			"event for reporting: "
+			"vmexit, mmio (x86 only), ioport (x86 only)"),
 		OPT_INTEGER(0, "vcpu", &kvm->trace_vcpu,
 			"vcpu id to report"),
 		OPT_STRING('k', "key", &kvm->sort_key, "sort-key",