diff --git a/omr-tracker/files/bin/omr-tracker-ss b/omr-tracker/files/bin/omr-tracker-ss
index d26c260f2..829cf4dc5 100755
--- a/omr-tracker/files/bin/omr-tracker-ss
+++ b/omr-tracker/files/bin/omr-tracker-ss
@@ -103,7 +103,7 @@ while true; do
 			script_alert_up="$(uci -q get omr-tracker.proxy.script_alert_up)"
 			[ -n "$script_alert_up" ] && eval $script_alert_up
 		}
-		if [ -z "$($IPTABLESSAVE 2>/dev/null | grep :ssr)" ] && [ -z "$(nft list ruleset | grep ss_r)" ] && [ -z "$(nft list ruleset | grep ssr_r)" ]; then
+		if [ -z "$($IPTABLESSAVE 2>/dev/null | grep :ssr)" ] && [ -z "$(nft list ruleset 2>/dev/null | grep ss_r)" ] && [ -z "$(nft list ruleset 2>/dev/null | grep ssr_r)" ]; then
 			if [ "$type" = "libev" ] && [ "$(uci -q get shadowsocks-libev.ss_rules.disabled)" != "1" ]; then
 				_log "Reload Shadowsocks rules"
 				/etc/init.d/shadowsocks-libev rules_up 2> /dev/null
@@ -120,7 +120,7 @@ while true; do
 		last=$((last + 1 ))
 		[ -z "$nocontact" ] && nocontact="$host" || nocontact="$nocontact, $host"
 		[ "${last}" -ge "${retry}" ] && {
-			if [ -n "$($IPTABLES -w -t nat -L -n 2>/dev/null | grep ssr)" ] || [ -n "$(nft list ruleset | grep ss_r)" ]; then
+			if [ -n "$($IPTABLES -w -t nat -L -n 2>/dev/null | grep ssr)" ] || [ -n "$(nft list ruleset 2>/dev/null | grep ss_r)" ] || [ -n "$(nft list ruleset 2>/dev/null | grep ssr_r)" ]; then
 				_log "Shadowsocks ${server} is down (can't contact via http ${nocontact})"
 				OMR_TRACKER_STATUS_MSG="Shadowsocks ${server} is down (can't contact via http ${nocontact})"
 				uci -q set openmptcprouter.omr.ss_${server}="down"