Nigel Clough was adamant Coventry should not have been awarded the penalty that led to their 2-0 victory over Derby at the Ricoh Arena on Saturday.
The Championship clash was locked at 0-0 until the 59th minute when Richard Keogh appeared to go down easily under a challenge from Jason Shackell in the area and referee Chris Foy pointed to the spot.
Lukas Jutkiewicz made no mistake in converting for the opening goal before Carl Baker added another to seal a 2-0 win for the Sky Blues.
Clough was less than pleased with the decision, insisting Shackell won the ball.
"I didn't think it was a penalty," he told Sky Sports HD2. "There was no infringement in the penalty area. He won the ball so that's fine by us."
Despite the defeat, Clough was pleased with his side's display and is now looking ahead to next weekend's local derby against Nottingham Forest.
"I thought we did alright today," he added. "I thought we created enough chances throughout the game and at the start of the second half especially.
"We just didn't manage to get that goal and we were up against it chasing the game at 1-0.
"We'll see when we go into the local derby next week against Forest and take it from there."