Newcastle midfielder Cheick Tiote believes officials target him because of his perceived reputation.
The Ivory Coast international picked up his 11th yellow card of the season during last weekend's defeat to Swansea even though television replays appeared to show he made no contact with Nathan Dyer.
Tiote has collected 36 yellows and two reds in 70 appearances for Newcastle, but feels he has been an easy target for referees.
"I don't know why I was booked. I tried to take the ball but I didn't touch anyone," said Tiote.
"The referee made a decision though and I have to accept that.
"I think sometimes I get punished because people know I have a lot of bookings already in England. I think sometimes this happens. On Saturday I wasn't at fault but I got a booking.
"That's football though, I just need to concentrate on my game and not let it affect me.
"I think my discipline is better now than last season. I need to keep doing the same things and to continue to improve in that way."