Inter manager Luciano Spalletti says his side lacked composure following their Coppa Italia quarter-final defeat to Lazio on Thursday evening.
Lucas Leiva's successful spot-kick dumped the seven-time winners out of the competition on penalties, extending their run without silverware to eight years.
Mauro Icardi equalised for the hosts following Ciro Immobile's opener in extra time, but the Nerazzurri failed to score again in 90 minutes, leaving Spalletti to bemoan his side's wasteful display.
"At the start, our play was awkward, we got lost when things were frantic and you can’t do that against sides like Lazio," Spalletti said, speaking post match via Inter's official website.