Charlton deepened Scunthorpe's relegation fears with an emphatic 4-0 win at the Valley.
Anfernee Dijksteel, Joe Aribo, Igor Vetokele and Lyle Taylor were all on target for Lee Bowyer's side, who are already sure of a play-off place.
The Addicks broke the deadlock on 24 minutes when Dijksteel netted his first Charlton goal by meeting Taylor's delightful pass before drilling a low angled drive past Jak Alnwick.
Adam Hammill should have done a lot better when placing a 38th minute shot well wide and only an excellent Dillon Phillips save prevented George Thomas from equalising.
Former Addick Lee Novak fired into the side-netting early in the second period, a miss he and the Iron were left to rue when Charlton doubled their advantage.
Ben Reeves whipped in a corner and Aribo climbed highest to head home on 57 minutes.
Aribo turned provider six minutes later by finding Vetokele, who coolly slotted a low shot beyond Alnwick.
Things went from bad to worse for Scunthorpe in the 66th minute as Taylor scored with a spectacular free-kick which flew into the top corner.
Scunthorpe remain in the relegation zone, a point adrift of safety.