Joe Hart kept West Ham in the FA Cup after the Hammers survived a scare at his old club Shrewsbury.
The hosts, second in Sky Bet League One, dominated for long spells and fully deserved another shot at the Hammers after a 0-0 draw.
West Ham needed Shrewsbury-born Hart, who began his career with the Shropshire side, to save well from Mat Sadler and Shaun Whalley while Jon Nolan fired over late on.
The Premier League visitors, who only made four changes from their last league outing, failed to test the committed Shrews after a limp display.
Shrewsbury Town 0-0 West Ham United
