But he insists the Scot is still capable of leading Everton into the Champions League.
"It's easy for us to get up for every game. That's the way the manager is," Anichebe said.
"Sometimes he's a nightmare but he's right - every single game is important.
"When I say he's a nightmare I just mean he's so demanding. He's always on you, every single day. That just shows the kind of character he is. He wants to be the best. Hopefully we can fulfil that."