Altrincham booked a home tie in the play-offs as they beat Oxford City 1-0 on the final day.
With City long since relegated, Alty knew it was the perfect chance to set up their post-season and they did so thanks to Regan Linney’s first-half goal.
Elliot Newby had already gone close when the opener came, with Newby tripped in the box allowing Linney to convert three minutes before half-time.
Chris Conn-Clarke almost added a second after the break but Altrincham had done enough.
Subscribe or register today to discover more from DonegalLive.ie
Buy the e-paper of the Donegal Democrat, Donegal People's Press, Donegal Post and Inish Times here for instant access to Donegal's premier news titles.
Keep up with the latest news from Donegal with our daily newsletter featuring the most important stories of the day delivered to your inbox every evening at 5pm.