diff --git a/luci-app-r2sflasher/root/usr/bin/rom_flash b/luci-app-r2sflasher/root/usr/bin/rom_flash
index 4c476caa063b7ccbc4c6f342d66b492330854258..f26a7e3a584a035aa00d5df96d1239cc87e8928e 100755
--- a/luci-app-r2sflasher/root/usr/bin/rom_flash
+++ b/luci-app-r2sflasher/root/usr/bin/rom_flash
@@ -32,7 +32,7 @@ cd $workingdir
 inputfile=$1
 nobackup=$2
 lomntpoint=/mnt/img
-backupfile=/tmp/backup.tar.gz
+backupfile=$workingdir/backup.tar.gz
 
 if [ "$inputfile" == "" ];then
    echo "需要传入 ROM zip 文件"