Algeria are into the quarterfinals after thumping Guinea yesterday.
Mahrez said, "Despite the score, when you watch the game it's not easy to play against teams like Guinea. We were very serious, very solid. When you do not concede a goal, you have more chances to win. We put three goals, it's a perfect night.
"We still have the quarter-finals. We will go little by little. We also want to go to the end."