diff --git a/rclone-webdav.service b/rclone-webdav.service
index 4bef004..aa75a3c 100644
--- a/rclone-webdav.service
+++ b/rclone-webdav.service
@@ -8,16 +8,18 @@ User=root
 Group=root
 ExecStart=/usr/bin/rclone serve webdav mega: \
   --addr 127.0.0.1:8000 \
+  --user chunzhi \
+  --pass chunzhi233233 \
   --umask 0000 \
   --buffer-size 32M \
   --dir-cache-time 12h \
   --vfs-read-chunk-size 64M \
   --vfs-read-chunk-size-limit 1G \
   --vfs-cache-mode full \
-  --vfs-cache-max-size 30G \
+  --vfs-cache-max-size 10G \
   --vfs-cache-max-age 2h
 ExecStop=/bin/kill -SIGTERM $MAINPID
 Restart=on-failure
 
 [Install]
-WantedBy=multi-user.target
+WantedBy=multi-user.target
\ No newline at end of file