Backup tab visible for normal client

I have just updated from 3.0.4.6. with no problem, but there is one issue:

When I log in as a normal client, I can see a backup tab in site and I can change the values.

Its great for client to see and restore backups, but I dont want to let him to change settings. Is it possible?

Thanks

 

And is there any possibility to do some tweaks in code?in what file? something like

if(logged as admin)
{
//show backups settings form
}
else
{
//dont show backups settings form
}
//show backups list

thanks for reply