McClean netted his sixth goal of the season when he curled home a 55th-minute effort from just outside the box.
"I was pleased with it and it's always nice to score," McClean told safc.com.
"Bardo let me have it and I'm glad he did because I hit it well and fortunately it went in. It wasn't a planned routine or anything - I just decided where I was going to put it and managed to hit the net.
"I maybe thought the keeper had done enough to save it, but I was glad to see it drop in."