diff --git a/usr.sbin/iostat/iostat.c b/usr.sbin/iostat/iostat.c
index f98ba9228e47..dbe7219095e8 100644
--- a/usr.sbin/iostat/iostat.c
+++ b/usr.sbin/iostat/iostat.c
@@ -945,9 +945,11 @@ devstats(int perf_select, long double etime, int havelast)
 				       ms_per_transaction);
 		} else {
 			if (Iflag == 0)
-				printf(" %4.1Lf %4.0Lf %5.1Lf ",
+				printf(" %4.*Lf %4.0Lf %5.*Lf ",
+				       kb_per_transfer >= 100 ? 0 : 1,
 				       kb_per_transfer,
 				       transfers_per_second,
+				       mb_per_second >= 1000 ? 0 : 1,
 				       mb_per_second);
 			else {
 				total_mb = total_bytes;