diff --git a/include/functions b/include/functions
index d8323f6..2ae4c55 100755
--- a/include/functions
+++ b/include/functions
@@ -163,7 +163,7 @@ function apply_ipv4_hack {
 			# Rate limit NTP DDOS UDP traffic using rules provided on the nanog list by
 			# pashdown@xmission.com
 			$IPTABLES -N NTP
-			$IPTABLES -I 1 BLACKHOLE -m recent --set --name ntpv4blackhole --rsource
+			$IPTABLES -I BLACKHOLE 1 -m recent --set --name ntpv4blackhole --rsource
 			$IPTABLES -A NTP -m recent --update --seconds 5 --hitcount 20 --name \
 					ntpv4 --rsource -j BLACKHOLE
 			$IPTABLES -A NTP -m recent --update --seconds 5 --hitcount 2 --name \