With Kane and Marcus Rashford - who has scored a free-kick in a Europa League semi-final - on the pitch, the sight of Walker stepping up cased much bemusement among England fans.
The dead-ball scenario was well positioned, about 25 yards out and to the left of centre, but the Manchester City full-back blazed over the bar.
In Walker's defence, he did once score a direct free-kick during his Tottenham Hotspur days - driving one under the wall against Manchester United in 2013.
Should've gone low and hard, Kyle https://t.co/YcH1Yq6vKH
— Ali Tweedale (@alitweedale) October 5, 2017
With qualification to the 2018 World Cup all but secure, England's turgid Wembley display never looked like costing them, but did leave supporters with more questions than answers about their long-term prospects.
Though England have an exciting forward line in Kane, Rashford, Dele Alli and Raheem Sterling, they look desperately short of technical quality in midfield and doubts remain over their defensive strength.
And as Walker's dismal effort showed, we are none the wiser about who will take their set-pieces.