diff --git a/test/units/test-honor-first-shutdown.service b/test/units/test-honor-first-shutdown.service
index 374f1e6b5f..3170f979e2 100644
--- a/test/units/test-honor-first-shutdown.service
+++ b/test/units/test-honor-first-shutdown.service
@@ -4,8 +4,8 @@ After=multi-user.target
 
 [Service]
 ExecStart=/usr/lib/systemd/tests/testdata/units/%N.sh
-ExecStop=sh -c 'kill -SIGKILL $MAINPID'
+ExecStop=sh -c 'kill -KILL $MAINPID'
 FailureAction=reboot
 
 [Install]
-WantedBy=multi-user.target
\ No newline at end of file
+WantedBy=multi-user.target