Opinion mining on social media posts has become more and more popular. Users\noften express their opinion on a topic not only with words but they also use\nimage symbols such as emoticons and emoji. In this paper, we investigate the\neffect of emoji-based features in opinion classification of Uzbek texts, and\nmore specifically movie review comments from YouTube. Several classification\nalgorithms are tested, and feature ranking is performed to evaluate the\ndiscriminative ability of the emoji-based features.\n