People's birthdays in calendar, but not the whole facebook!

[m3kyd]

I want the calendar to display my contacts birthdays, but the only way I can do it is if I check the "Facebook calendar" in the calendar app and then it displays me ALL birthdays of ALL the people in my facebook! I dont want that, I just want the calendar to display birthdays of people in my phone's Contacts List.

How do I go about this?