diff --git a/luci-app-openmptcprouter/root/etc/init.d/openmptcprouter b/luci-app-openmptcprouter/root/etc/init.d/openmptcprouter
index 2463d20fa..9954d850a 100755
--- a/luci-app-openmptcprouter/root/etc/init.d/openmptcprouter
+++ b/luci-app-openmptcprouter/root/etc/init.d/openmptcprouter
@@ -104,7 +104,7 @@ omr_set_settings() {
 			tc qdisc del dev ${ifname} root netem 2>&1 >/dev/null
 		fi
 		if [ "$addlatency" != "0" ]; then
-			if [ "$(tc qdisc show dev $ifname | grep delay)" != "" ]; then
+			if [ "$(tc qdisc show dev $ifname | grep delay)" = "" ]; then
 				tc qdisc add dev ${ifname} root netem delay ${addlatency}ms 2>&1 >/dev/null
 			elif [ "$(tc qdisc show dev $ifname | awk '/delay/ { print $10 }' | sed 's/ms//')" != "$addlatency" ]; then
 				tc qdisc replace dev ${ifname} root netem delay ${addlatency}ms 2>&1 >/dev/null