Index: head/sys/netinet/tcp_stacks/rack.c
===================================================================
--- head/sys/netinet/tcp_stacks/rack.c
+++ head/sys/netinet/tcp_stacks/rack.c
@@ -2275,7 +2275,7 @@
 	}
 	hpts_timeout = rack_timer_start(tp, rack, cts);
 	if (tp->t_flags & TF_DELACK) {
-		delayed_ack = tcp_delacktime;
+		delayed_ack = TICKS_2_MSEC(tcp_delacktime);
 		rack->r_ctl.rc_hpts_flags |= PACE_TMR_DELACK;
 	}
 	if (delayed_ack && ((hpts_timeout == 0) ||