diff --git a/traffic-control/manual/run-tcmmd-test.sh b/traffic-control/manual/run-tcmmd-test.sh
index e196acd1cad7ce3903c2f2ca8a86d03452f1d568..61be6a9e206f194c1faa7df73752ddeeb7d22bca 100755
--- a/traffic-control/manual/run-tcmmd-test.sh
+++ b/traffic-control/manual/run-tcmmd-test.sh
@@ -102,6 +102,7 @@ check_decent_speed() {
 check_tcmmd() {
   sudo $TCMMD -i $NET_INTERFACE &>/dev/null &
   TCMMD_PID=$!
+  ROOT_PROC_KILL_LIST+=($TCMMD_PID)
   sleep 0.5
   if ! sudo kill -s 0 $TCMMD_PID &> /dev/null ; then
     return 1