The Kelowna Law Courts were evacuated on Thursday afternoon after the fire alarm was pulled.
Firefighters quickly arrived on scene to investigate reports of smoke coming from the building.
After a full search of the premises, emergency personnel were unable to find any smoke.
What they did find was steam coming from a vent on the back side of the building, which is believed to be the source of the false alarm.
People were allowed back inside shortly after 3PM.