Keep getting 0 correct and 3 wrong.

My prompt works fine popping up with 3 questions, but when I answer them correctly I always score 0 correct and 3 wrong. Could someone take a look at my code and give me a nudge in the right direction?

CODE:

var quizTime = [ ['How far is earth from the moon', '238900mi'], ['What is the largest continent in the world?', 'asia'], ['What is the largest mammal?', 'blue whale'] ];

function print(message) { document.write(message); }

var correct = 0; var wrong = 0;

for(var i = 0; i<quizTime.length ; i++){ var question = prompt(quizTime[i][0]);

if(question.toLowerCase === quizTime[i][1]){ correct += 1; } else { wrong += 1; }

}

alert('You got ' + correct + ' correct'); alert('You got ' + wrong + ' wrong');