Southampton head coach Tonda Eckert praised his team's first-half display but called for greater resilience at set-pieces after their narrow FA Cup win at Doncaster Rovers.
"The FA Cup is a very special tournament, and never an easy one, because you have nothing to lose when you go down, so I'm very pleased we're in the next round," he told BBC Radio Solent.
"In the end, there were some patterns we have seen all season. We need to make sure we improve our resilience on set plays.
"It was a very good first-half. The second half could have been better, but we're in the next round.