Cannot deselect item with md-checks and others if multiple=false

[LexLythius]

This code:

  setValueSelection(value, select) {
    if (select) {
      return this.addToSelection(value);
    }
    else {
      return this.removeFromSelection(value);
    }
  },
...
  removeFromSelection(value) {
    if (this.get('multiple')) {
      this.get('selection').removeObject(value);
    }
    else {
      throw new Error('removeFromSelection is not supported in single-selection mode');
    }
  },

results in error when unclicking an md-check from md-checks with multiple=false (single-selection).