diff --git a/conf/systemd.service b/conf/systemd.service
index ca817d2..7fbeb28 100644
--- a/conf/systemd.service
+++ b/conf/systemd.service
@@ -8,7 +8,7 @@ User=__APP__
 Group=__APP__
 WorkingDirectory=__INSTALL_DIR__/
 Type=simple
-StandardOutput=/var/log/__APP__/daemon.log
+StandardOutput=append:/var/log/__APP__/daemon.log
 StandardError=inherit
 ExecStart=/usr/bin/php__PHPVERSION__ __INSTALL_DIR__/bin/daemon.php start
 ExecStop=/usr/bin/php__PHPVERSION__ __INSTALL_DIR__/bin/daemon.php stop