diff --git a/sys/netinet/tcp_stacks/bbr.c b/sys/netinet/tcp_stacks/bbr.c
--- a/sys/netinet/tcp_stacks/bbr.c
+++ b/sys/netinet/tcp_stacks/bbr.c
@@ -6329,8 +6329,6 @@
 	}
 	/* Round it up */
 	rtt_ticks = USEC_2_TICKS((rtt + (USECS_IN_MSEC - 1)));
-	if (rtt_ticks == 0)
-		rtt_ticks = 1;
 	if (tp->t_srtt != 0) {
 		/*
 		 * srtt is stored as fixed point with 5 bits after the