Everton boss Sean Dyche admits playing five at the back wasn't his first-choice after defeat at Wolves.
The system worked for their win at Burnley last week.
But Dyche admitted: "It's not an ideal situation, it's not my preferred way of playing but we felt it was appropriate for today.
"To be honest, until the second goal, there was a large part of it that we were playing, we were opening pockets, we were opening up good situations without really capitalising on them.
"We weren't particularly being opened up that much at that stage. The second goal changed the whole feel. We know that, we have done it ourselves. We never really got a grip of the game after, we had to change it, open up and to go for it, and with that, the price comes of conceding again."