diff --git a/luci-app-omr-dscp/root/etc/init.d/omr-dscp b/luci-app-omr-dscp/root/etc/init.d/omr-dscp
index 63dd5e19b..bed7c3bad 100755
--- a/luci-app-omr-dscp/root/etc/init.d/omr-dscp
+++ b/luci-app-omr-dscp/root/etc/init.d/omr-dscp
@@ -11,6 +11,14 @@ USE_PROCD=1
 # shellcheck disable=SC1091
 . /lib/functions.sh
 
+if [ -f /usr/sbin/iptables-legacy ]; then
+	IPTABLES="/usr/sbin/iptables-legacy"
+	IP6TABLES="/usr/sbin/ip6tables-legacy"
+else
+	IPTABLES="/usr/sbin/iptables"
+	IP6TABLES="/usr/sbin/ip6tables"
+fi
+
 # Get the lan interface name
 lan_device=
 config_load network
@@ -19,10 +27,10 @@ config_get lan_device lan ifname
 config_load dscp
 
 _ipt4() {
-	iptables -w -t mangle "$@" 2>&1 >/dev/null
+	$IPTABLES -w -t mangle "$@" 2>&1 >/dev/null
 }
 _ipt6() {
-	ip6tables -w -t mangle "$@" 2>&1 >/dev/null
+	$IP6TABLES -w -t mangle "$@" 2>&1 >/dev/null
 }
 
 _add_dscp_rule() {