How to remove event listener in Ember

I would like to set up an event listener in a component on keydown event in Ember. The event listener gets properly added, but I can't seem to remove it as the removeEventListener passes in a different function. Any help on how to properly set this up would be appreciated.

onEscPress(e) {
  if (e.which === 27) {
    alert('test');
    this.send('dismissModal');
  }
},

willInsertElement() {
  window.addEventListener('keydown', this.onEscPress(e), false);
},

willDestroyElement() {
  // Uses a different function, so doesn't properly remove the listener
  window.removeEventListener('keydown', this.onEscPress(e), false);
},