diff --git a/README.md b/README.md
index e4a9672..8498c42 100644
--- a/README.md
+++ b/README.md
@@ -121,8 +121,8 @@ $ # Login the new create site with rulingcom account and choose “Admin Area”
 ```sh
 $ sudo crontab -e
 # 內容如下：
-# 0 3 * * * mongodump -o /home/backup/db/`date "+\%Y\%m\%d"`_db
-# 0 4 * * * rm -fr /home/backup/db/`date --date="1 week ago" "+\%Y\%m\%d"`_db
+# 0 3 * * * mongodump -o /home/backup/db/`date "+%Y%m%d"`_db
+# 0 4 * * * rm -fr /home/backup/db/`date --date="1 week ago" "+%Y%m%d"`_db
 ```
 
 ### 二、R4.5 網站目錄備份