Florida Atlantic head coach Lane Kiffin loves using social media, but this time, it cost him.

Conference USA fined Kiffin $5,000 and “publicly reprimanded him” for violating the conference’s sportsmanship policy with a tweet portraying on-field officials being blind according to ESPN.

Clearly, Kiffin was not pleased with the officiating in FAU’s 36-31 defeat against Marshall on Friday. The Thundering Herd scored the game-winning touchdown in the final minute.

ESPN reports that Conference USA told Kiffin that they agreed there are “inconsistencies” in some of the league’s officiating, and that they are planning to look into it, but the conference apparently still found the fine warranted.

“I just lost $5,000 for a tweet,” Kiffin said. “We have freedom of speech, but I guess around here there’s no such thing as freedom to tweet. Maybe LeBron James will come out and comment about it tomorrow.”

What’s interesting is Kiffin declined to criticize the officials immediately after the game but then pulled the Twitter stunt a day later. FAU committed nine penalties for 90 yards in the loss.

“Conference USA has specific rules and standards regarding sportsmanship which have been adopted by our membership,” commissioner Judy MacLeod said in a statement. “We have an obligation to enforce our rules, including the prohibition of public criticism of officiating.”