"It is absolutely vital that all 16 and 17-year-olds are in a position to have their say if the Referendum Bill includes proposals to give them the vote," he said.
"It would be totally unsatisfactory to be in a situation where some of those in that age bracket were able to vote but others were not because of the way the electoral roll is currently constructed.
"This Bill will close that potential loophole and make sure that every single person in Scotland who is aged 16 or over on the day of the referendum will be in a position to vote."
The First Minister also announced that £1.8 million and £270,000 from public bodies Scottish Enterprise and Skills Development Scotland will be given to Three to train call centre staff.
The cash, which amounts to over £5,000 a head for every new worker, will support training opportunities at Three's expanded centre in Glasgow. He said the expansion follows talks he held with the managing director of Three parent-company Hutchison Whampoa during his visit to Hong Kong last December.