Can't I use the HTTPS URL of a Facebook page in a Facebook like button? -

Can't I use the HTTPS URL of a Facebook page in a Facebook like button? -

i have add together facebook button on website. button points facebook page.

the next works fine:

<div class="fb-like" data-href="http://www.facebook.com/sp1ndjs" data-layout="box_count" data-action="like" data-show-faces="true" data-share="true"></div>

but when utilize https url of facebook page, i.e. http://www.facebook.com/sp1ndjs instead of https://www.facebook.com/sp1ndjs, count 0: (only data-href html5 attribute has been changed in following)

<div class="fb-like" data-href="https://www.facebook.com/sp1ndjs" data-layout="box_count" data-action="like" data-show-faces="true" data-share="true"></div>

why?

facebook https facebook-like