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 720ec2da0..e6ae859f3 100755
--- a/mptcp/files/usr/share/omr/post-tracking.d/post-tracking
+++ b/mptcp/files/usr/share/omr/post-tracking.d/post-tracking
@@ -382,7 +382,7 @@ if [ "$(uci -q get openmptcprouter.$OMR_TRACKER_INTERFACE.lc)" = "" ] || [ $(($(
 		local serverip=$(uci -q get shadowsocks-libev.sss0.server)
 		[ -n "$serverip" ] && [ "$serverip" != "127.0.0.1" ] && {
 			omrtracebox=$(omr-tracebox-mptcp $serverip $OMR_TRACKER_DEVICE)
-			[ -n "$omrtracebox" ] && uci -q set openmptcprouter.$OMR_TRACKER_INTERFACE.mptcp_status="$omr-tracebox"
+			[ -n "$omrtracebox" ] && [ "$omrtracebox" != "-tracebox" ] && uci -q set openmptcprouter.$OMR_TRACKER_INTERFACE.mptcp_status="$omr-tracebox"
 		}
 		[ -n "$ipaddr" ] && uci -q set openmptcprouter.$OMR_TRACKER_INTERFACE.publicip="$ipaddr"
 		[ -n "$OMR_TRACKER_LATENCY" ] && uci -q set openmptcprouter.$OMR_TRACKER_INTERFACE.latency="$OMR_TRACKER_LATENCY"