Remove a file called -r using rm

Is there any way to remove a file named "-r" using "rm", because "rm" assumes that file is one of it's options if I type "rm -r" and then throws an error message?
I also tried "rm -r -r" and that didn't work either.

rm ./-r ���

Thanks very much, that's fixed it.

Also -- can be used,

 rm -- -r

Thanks
Nagarajan Ganesan.