diff --git a/seafile/rootfs/defaults/.env.example b/seafile/rootfs/defaults/.env.example
index 86e9b5dd1..05ad01dc5 100644
--- a/seafile/rootfs/defaults/.env.example
+++ b/seafile/rootfs/defaults/.env.example
@@ -26,6 +26,7 @@ MYSQL_HOST=db
 MYSQL_USER_PASSWD=secret
 MYSQL_ROOT_PASSWD=secret
 MYSQL_PORT=3306
+MYSQL_USER=seafile
 
 ### Volume parameters