Abdul Fatawu's first half effort seemed to have been enough to grab the Foxes a tight win in which Wednesday were left nursing a familiar tale of woe - of missed chances and headache as to how their efforts could again go unrewarded. And more missed chances.
That was until Callum Paterson - excellent on the night - cushioned a header into Jeff Hendrick's path in injury time for the Newcastle United loanee to poke home calmly.
It's a point - but the feeling of the evening suggests it could mean a little more.
Here are our ratings from Hillsborough.
1. Cameron Dawson - 7
Made an excellent save in the last moment to earn Wednesday a point - and celebrated it appropriately. Seemed to have been given instruction to take his time with ball in hand and managed that nicely. | PA / UGC
2. Dominic Iorfa - 8
Some important interventions and looked more than competent up against some top talent. Battled hard, made tackles and won duels. | UGC / Steve Ellis
3. Bambo Diaby - 6
Couldn't direct a free header past the Leicester keeper on 12 minutes. Was isolated up against Mavididi as the Foxes broke in the lead-up to the opener and couldn't stop him. Steadied as the game went on but off on the hour for Palmer. | UGC / Steve Ellis
4. Di’Shon Bernard - 7
Looks such a good prospect. Competent throughout, bounced Jamie Vardy off with ease late on. Dithered on one late clearance, resulting in a row with Dawson. | Ellis / UGC