Two of Swindon's goals were scored by Rory Fallon, with the final goal being scored by Michael Pook.
Swindon's team was: Jordan, Jenkins, O'Hanlon, Comyn-Platt, Smith, Roberts, Wells, Pook, Nicolau, Fallon and Thorpe.
Swindon now travel to Sussex on Saturday to play Crawley Town in the next friendly game, then travel to Dorset on Monday to play Sherborne. (near Yeovil)