Real Madrid boss Carlo Ancelotti has admitted that his side will need to improve defensively if they are to overcome Juventus in the semi-finals of the Champions League.

The goals have flowed for Los Blancos in recent weeks, but they have been guilty of some poor defensive mistakes.

Ahead of their first leg against Juve on Tuesday, Ancelotti has called on his team to remain solid at the back.

"We'll need to attack so we can obtain a decent result but more importantly we need to defend much better than we've been doing lately," the Italian told reporters.

"However, I've ruled out playing with three central defenders. We only did it for 10 minutes against Celta Vigo and for the last five minutes against Sevilla."

Real Madrid are attempting to become the first team to successfully defend the Champions League in the modern era.