Goals from David McKenna and Rory McAllister secured Brechin a victory over Highland League champions Buckie.
McKenna floated the ball high over the head of Buckie goalkeeper Kevin Main for his seventh goal of the season after 18 minutes.
McAllister gathered the ball from Kevin Byers before floating the ball into the net for his 19th goal of the season on the half-hour mark.
And the Division Two side moved into the Scottish Cup quarter-finals.
It meant Buckie failed to make the most of their Scottish Cup reprieve, having been handed a passport into the fifth round after East Stirlingshire were kicked out after playing an ineligible player.
Buckie's chances of a surprise result had been hampered by the absence of the cup-tied Shawn Scott and Gary Clark, the suspended Graeme Stewart and Ian Murray, who had other work commitments.
In contrast, three influential players were able to start for Brechin - fit-again midfielder Byers, defender Gerry McLauchlan and striker McAllister, the latter two facing a league suspension after midweek dismissals.
And the Highland League champions were no match for their Division Two counterparts, with Brechin dominated proceedings from the early stages.
McKenna's stunning left-footed drive from the edge of the 18-yard box gave the visitors the lead.
McAllister all but wrapped up his side's passage into the next round when he doubled the advantage with a fierce effort from 20 yards.
Michael Morrison went closest for Buckie, but his low drive from Andy Low's corner was easily saved by goalkeeper Craig Nelson.
This page is best viewed in an up-to-date web browser with style sheets (CSS) enabled. While you will be able to view the content of this page in your current browser, you will not be able to get the full visual experience. Please consider upgrading your browser software or enabling style sheets (CSS) if you are able to do so.