Glasgow School of Art, which was severely damaged by fire, has revealed that a new fire suppression system was due to be fitted in the Mackintosh building over the summer.
The school said it was "tragically ironic", but said there was no way of knowing if the system would have made a difference to the spread of the blaze.
Friday's fire completely destroyed the school's iconic library.
But fire crews managed to preserve most of the building and its contents.
They include the archives, museum and lecture theatre.
The Glasgow School of Art (GSA) said the new system would have enhanced the fire safety measures in place, but did not include sprinklers due to the risk of water damage.
The main damage was to the west wing of the building, built between 1907-09, Professor Tom Inns, Director of the GSA said.
The 1897-99 part of the site, including the Mackintosh Museum and Mackintosh Room, has "survived intact", he added.