diff --git a/overlay/etc/systemd/user/firefox-marionette.service b/overlay/etc/systemd/user/firefox-marionette.service
index f83ac13..b998f3a 100644
--- a/overlay/etc/systemd/user/firefox-marionette.service
+++ b/overlay/etc/systemd/user/firefox-marionette.service
@@ -4,4 +4,7 @@ Requires=firefox-marionette.socket
 Requires=firefox.service
 
 [Service]
-ExecStart=/usr/lib/systemd/systemd-socket-proxyd 127.0.0.1:2828
+ExecStart=/usr/lib/systemd/systemd-socket-proxyd \
+    --connections-max=1 \
+    --exit-idle-time=10s \
+    127.0.0.1:2828