diff --git a/usr.bin/vmstat/vmstat.c b/usr.bin/vmstat/vmstat.c
--- a/usr.bin/vmstat/vmstat.c
+++ b/usr.bin/vmstat/vmstat.c
@@ -1300,7 +1300,7 @@
 	intrname = intrnames;
 	xo_open_list("interrupt");
 	for (i = 0, intrcnt=intrcnts, old_intrcnt=old_intrcnts; i < nintr; i++) {
-		if (intrname[0] != '\0' && (*intrcnt != 0 || aflag)) {
+		if (*intrcnt != 0 || aflag) {
 			count = *intrcnt - *old_intrcnt;
 			rate = ((uint64_t)count * 1000 + period_ms / 2) / period_ms;
 			xo_open_instance("interrupt");