diff --git a/src/service/xpra-nosocketactivation.service b/src/service/xpra-nosocketactivation.service
index 5d72b42077..66c8b3d657 100644
--- a/src/service/xpra-nosocketactivation.service
+++ b/src/service/xpra-nosocketactivation.service
@@ -8,10 +8,10 @@ After=network.target
 Type=simple
 EnvironmentFile=-/etc/default/xpra
 ExecStart=/usr/bin/xpra proxy :14500 --daemon=no \
-    --bind-tcp=0.0.0.0:14500 --tcp-auth=sys \
+    --bind-tcp=0.0.0.0:14500 --tcp-auth=${TCP_AUTH} \
     --ssl-cert=/etc/xpra/ssl-cert.pem --ssl=on \
-    --bind=/run/xpra/system --auth=peercred --socket-dirs=/run/xpra --socket-permissions=666 \
-    --log-dir=/var/log --pidfile=/run/xpra.pid
+    --bind=/run/xpra/system --auth=${AUTH} --socket-dirs=/run/xpra --socket-permissions=666 \
+    --log-dir=/var/log --pidfile=/run/xpra.pid --debug=${DEBUG}
 #rely on SIGKILL which returns 128+15=143
 SuccessExitStatus=0 143
 Restart=on-abnormal