Kevin Nisbet struck in stoppage time as Aberdeen came from 2-0 down to earn a point at home to Dundee United.
The Scotland striker had earlier reduced the deficit with a drilled shot, as the Dons dominated the second half.
The visitors took the lead when the unmarked Vicko Sevelj nodded in at the back post.
United then doubled their advantage courtesy of Sam Dalby's glancing header in what was the ninth minute of first-half added time.
Aberdeen drop to fourth in the table, having been overtaken by Hibernian who had beaten Hearts earlier, while United remain fifth, one point behind the Dons.
The hosts had the bulk of the possession in the first half, but lacked a cutting edge.
United took their chances and could have been further ahead, when Sevelj saw his shot deflected into the net by substitute Emmanuel Adegboyega, who was subsequently ruled offside.
Aberdeen were on the front foot as soon as the second half started and Pape Habib Gueye should have done better when he fired wide from 10 yards.
At the other end, Kristijan Trapanovski went close with a low curling strike.
Nisbet has struggled at times during his loan from Millwall but his fine effort set up a grandstand finish, and his fourth goal in five games ensured the points were shared.