Bootstrap - label on the right side of checkbox

I have a sample checkbox:

<div class="form-check">
  <input class="form-check-input" type="checkbox" value="" id="defaultCheck1">
  <label class="form-check-label" for="defaultCheck1">
    Default checkbox
  </label>
</div>

I'd like to have a label on the right side. Do you know how can I do it? I tried with pull-right, but it does not work.