More than 70 people were asked to leave the Bullring shopping centre in Birmingham city centre after a fire started in a unit on Friday evening.
Six fire engine and crews from Highgate, Ladywood and Aston were called the centre just after 7.02pm and worked to put out the blaze.
After the fire was extinguished, crews remained on site to ventilate the building.
A spokeswoman for West Midlands Fire Service said: "We had six crews from Highgate, Ladywood and Aston called out at 7.02pm to reports of a fire at the Bull Ring.
"The crews arrived on the scene and worked to put the fire out and are attempting to ventilate the building."
Shoppers were allowed back into the centre around 8.30pm, with the final fire crew leaving the scene at 10.30pm.
It was business as normal on Saturday as shoppers returned to the centre.