not a valid month

I'm using the datemask dd/mm/yyyy

when I try to save it with a year, it shows the error. The problem is with the mask format, dd/mm/yyyy is javascript format, php should be d/m/Y

I fixed it by adding this line in the birthdays_birthday.inc file, at line 56:

$mask = str_replace(array('dd', 'mm', 'yy', 'yyyy'), array('d', 'm', 'Y', 'Y'), $mask);

before this line:

$result = date_parse_from_format($mask, $text);

Am I right in this? Shall I commit it?