Dean Holdsworth lamented Danny Hylton's miss which would have put Aldershot two goals up at Shrewsbury, with the teams drawing 1-1 on Saturday.
The Shots ended up having to settle for a point in the League Two clash at the New Meadow, after home striker Marvin Morgan cancelled out Josh Payne's 50th-minute penalty.
With the Shrews down to 10 men following the dismissal of David McAllister, Hylton crashed an effort off the crossbar from close range. And Holdsworth was frustrated the opportunity to end Shrewsbury's unbeaten home record this season was not taken by his players.
"I'm a bit disappointed we didn't take our chance to go 2-0 up," said Holdsworth. "Shrewsbury have got some quality players and they punished us for that.
"You can see why they've got a good record here and you give them that respect but their keeper's also made a fantastic save from Mark Molesley as well. Give them credit as they've earned their point.
"I thought the penalty would have been a foul outside the box but sometimes you see them not given. It was a foul in the box and he's given the penalty. It's the ref's decision."