A Gary Mackay-Steven penalty helped Aberdeen to a narrow 1-0 victory against Dundee at Dens Park.
The goal arrived 15 minutes from time after Dundee defender Genseric Kusunga was penalised for handball.
The Dons have now won 10 league games in a row against the Dark Blues.
Aberdeen made one change from the side that started against Rangers last weekend with Stevie May stepping in to replace the injured Scott McKenna.
Dundee were looking for their first points of the season after a 2-1 reverse against St Mirren on the opening weekend.
Dee midfielder Kharl Madianga had the first attempt on goal with a fizzing attempt from 25 yards that flew over the crossbar.
Mackay-Steven was causing problems down the right flank with a neat piece of trickery setting up May but his low drive was well blocked by Nathan Ralph.
Aberdeen began to dominate with Andrew Considine, enjoying a rare shift in the centre of defence, nodding wide from a Niall McGinn cross.
The Dons were carved open in the 21st minute with Jesse Curran surging down the right wing before finding the unmarked Sofien Moussa who lacked composure and blasted over from 12 yards out.
Dundee were next to threaten with Michael Devlin in the right place to head Paul McGowan’s volley clear.
The game was becoming increasingly stretched with the next chance falling Aberdeen’s way but Sam Cosgrove’s effort from a May pass was too close to Dundee goalkeeper Jack Hamilton.
May was unlucky not to open the scoring two minutes before the break when he displayed quick footwork to manufacture a yard of space in a packed penalty area but Hamilton came to the rescue for the hosts.
Dundee made a change at the interval with Adil Nabi coming on for his debut in place of the injured Lewis Spence.
The Dark Blues should have broken the deadlock within two minutes of the restart when Josh Meekings somehow failed to convert from an Elton Ngwatala corner when a goal looked certain.
Ferguson volleyed over at the other end before the Dons made their first change with Bruce Anderson replacing Cosgrove.
Dundee were growing in confidence but they were wasteful in front of goal with Jean Alassane Mendy guilty of dragging his shot wide when he should have at least hit the target.
Anderson went close to making the breakthrough after 65 minutes when he pounced on some slack Dundee defending but his powerful volley crashed off the crossbar.
It looked like a goal was never going to come but the Dons were given a helping hand in the 74th minute when referee Bobby Madden pointed to the spot when Genseric Kusunga used an arm to block Dominic Ball’s goal-bound header.
Mackay-Steven, who netted from the spot against Burnley in the Europa League, was calmness personified as he sent Hamilton the wrong way from the spot.
Dee almost got back on level terms soon after but Joe Lewis made a superb stop to deny Nabi a debut goal.
McGinn, who had scored 10 goals in 14 games against Dundee, went close to a second with a curling free kick that was inches too high.
