diff --git a/test/units/TEST-13-NSPAWN.machined.sh b/test/units/TEST-13-NSPAWN.machined.sh
index 46884791ea..365d2a25e6 100755
--- a/test/units/TEST-13-NSPAWN.machined.sh
+++ b/test/units/TEST-13-NSPAWN.machined.sh
@@ -287,6 +287,10 @@ rm -f /var/lib/machines/long-running/trap
 varlinkctl call /run/systemd/machine/io.systemd.Machine io.systemd.Machine.Kill '{"name":"long-running", "whom": "leader", "signal": 5}'
 timeout 120 bash -c "until test -e /var/lib/machines/long-running/trap; do sleep .5; done"
 
+# sending KILL signal
+varlinkctl call /run/systemd/machine/io.systemd.Machine io.systemd.Machine.Kill '{"name":"long-running", "signal": 9}'
+timeout 30 bash -c "while varlinkctl call /run/systemd/machine/io.systemd.Machine io.systemd.Machine.List '{\"name\":\"long-running\"}'; do sleep 0.5; done"
+
 # test io.systemd.Machine.Terminate
 long_running_machine_start
 rm -f /var/lib/machines/long-running/terminate