diff --git a/mptcp/files/usr/share/omr/post-tracking.d/post-tracking b/mptcp/files/usr/share/omr/post-tracking.d/post-tracking
index 919d7bceb..ab4537acf 100755
--- a/mptcp/files/usr/share/omr/post-tracking.d/post-tracking
+++ b/mptcp/files/usr/share/omr/post-tracking.d/post-tracking
@@ -191,7 +191,11 @@ del_server_route() {
 	ip route del $serverip dev $OMR_TRACKER_DEVICE metric $metric >/dev/null 2>&1
 	ip route del $serverip dev $OMR_TRACKER_DEVICE >/dev/null 2>&1
 	ip route del $serverip dev $OMR_TRACKER_DEVICE >/dev/null 2>&1
-	ip route del default via $OMR_TRACKER_DEVICE_GATEWAY dev $OMR_TRACKER_DEVICE >/dev/null 2>&1
+	if [ -n "$OMR_TRACKER_DEVICE_GATEWAY" ]; then
+		ip route del default via $OMR_TRACKER_DEVICE_GATEWAY dev $OMR_TRACKER_DEVICE >/dev/null 2>&1
+	else
+		ip route del default dev $OMR_TRACKER_DEVICE >/dev/null 2>&1
+	fi
 }
 
 disable_pihole() {