The incident at Coco on Silver Street in Doncaster town centre was reported at 8.10pm last night.
An electrical fault was to blame.
The fire did not spread into the club.
Firefighters called to Doncaster nightclub
Firefighters were called to a Doncaster nightclub - after the sign outside caught fire.
By The Newsroom
Tuesday, 15th November 2016, 12:23 pm
Updated Wednesday, 16th November 2016, 4:14 pm