Emergency services were called to a toilet fire at the University of Otago in Dunedin.
A Fire and Emergency New Zealand (Fenz) spokeswoman said an alarm activation called crews to an area of the University about 8.05pm.
The cause was a small fire in a toilet, which was "easily extinguished", she said.
Crews from Willowbank, St Kilda and Dunedin City attended the incident, which was a standard response for the University.
A fire investigator was trying to determine the source, she said.