Andy Scott apologised for letting thousands of people down on Sunday - those tuning in to ITV looking for an FA Cup upset.
Brentford made sure there would be no second successive giant-killing spree for Havant & Waterlooville with a 3-1 win on the south coast.
Boss Scott said: "I'm sorry we let all those people down, but I'm pleased the people we let down were those looking for an upset.
"We did a professional job. It was always going to be a tricky one, and there were a few upsets already, with Shrewsbury, Exeter and Swindon going out to non-league teams.
"I'd have liked it to be more comfortable, and Ben Hamer kept us in it with a great save at 2-1. But to be honest, if we'd taken more care in the final third, we could have had more goals.
"We knew it would be a messy and scrappy game. But we came here with the idea in our heads that we were a non-league team and would be playing exactly the same way they would."
Marvin Williams gobbled up the rebound from a parried Nathan Elder shot to give the Bees the lead two minutes before the break.
Charlie MacDonald scrambled home Glenn Poole's cross at the second attempt with 25 minutes left to make it 2-0.
Havant pulled a goal back with 20 minutes left when Ian Simpemba headed home sub Brett Pope's corner, and it took a fine doube-save from Ben Hamer to keep the Bees in front.
But Brentford broke down and made the game safe when MacDonald raced to the byline and picked out Elder to slot home into the far corner.