GREEN BAY, Wis. -- Green Bay Packers coach Mike McCarthy wasn't necessarily accusing the New York Jets of any funny business, but he expressed surprise that they were not surprised by his surprise onside kick in Sunday's game.

McCarthy made the call to try the onside kick with 3:12 left in the second quarter after a field goal cut the Jets' lead to 21-9. Mason Crosby popped the ball up, but the Jets were ready for it and easily recovered.

"I felt like they were in our huddle, frankly," McCarthy said Monday. "Just the way they lined up to it is disturbing to me. It's something we've never shown. It's a formation we've never been in."

Special teams coach Shawn Slocum said Crosby hit the kick exactly how he was instructed, which should have given the Packers a better chance to recover it.

It was a bold move at the time, but it did not cost the Packers anything because cornerback Tramon Williams picked off Jets quarterback Geno Smith on the ensuing possession.

"I kind of pushed the envelope there," McCarthy said. "I was trying to steal a series back, frankly, that we lost at the beginning of the game, and the fact that they had the ball coming out in the second half. Like a lot of times when you make those kind of decisions, a lot of those variables are looked at before the game, so you're able to react to it. The timing of it, I thought the risk was definitely worth it."