The England manager on Monday criticised his former captain for discussing squad morale publicly rather than with him as management and players closed ranks to deny talk of mutiny in the camp.
GEAR:Get your Terry, England shirt
"I don't understand why he didn't speak with me," the Italian told Britain's ITV television channel in an interview.
"I spoke with some players and I think it is only John Terry who said this," added Capello.
"No-one spoke with me about these comments. My door is open always. If you want to speak with me you can speak with me. Every time when I have a meeting I ask my captain: 'Problems? You want to say something?
"I read yesterday that John Terry said this. I don't understand why he didn't speak with me. When you speak you have to speak privately and not with you (the media).
"This is the big mistake. This is a very big mistake. I know that some time some players want to speak more with you (the media) than with the other players. This is a mistake.
"You have to speak with the other players, with me, in the dressing room. I hope from the big mistake, I hope will come out a big performance."
"It is not a revolution. It is one mistake of a player but no revolution."
Lampard, the squad's most articulate spokesman, had earlier told reporters that there was no plot to loosen the iron grip of coach Capello.
TERRY "MISUNDERSTOOD"
Lampard, 31, said the squad held a routine meeting to review their performance in last Friday's dismal 0-0 draw against Algeria, their second disappointing Group C outing at the finals. In their first, they drew 1-1 with the United States.
Terry told reporters that nine players met in Cape Town last Friday evening to examine the side's failings
