Jade - Bootstrap checkbox doesn't work

I'm using Bootstrap 3 to make a checkbox exactly according to the documentation, but it doesn't seem to work (I can't check it/remains empty on click).

.row.good-entry.no-pad
         .col-xs-1.col-sm-1
          label
           input.check(type='checkbox')
         .col-xs-11.col-sm-11
          .row
           .col-xs-6.col-sm-8.good-info
            ul
             li
              .good-title Nama Item

Anyone understand why it happens? Any help appreciated. :)