Airbus will postpone deliveries of 12 A380s to Emirates Airline that were scheduled to take place over the next two years. The manufacturer will now deliver six of the superjumbos to Emirates in 2018 and six in 2019.

In a statement released on December 27, the manufacturer said the schedule deferment stems from agreements reached between Emirates and Rolls-Royce, supplier of the Trent 900 engine option on the A380, as well as between Emirates and Airbus.

Airbus reconfirmed the target it announced in July of delivering 12 A380s per year in 2018—a build rate the manufacturer cut by more than half from the 27 A380s produced in 2015 as demand dries up for the double-decker airliner.

Earlier this year, Reunion Island carrier Air Austral cancelled an order for two of the superjumbos, and Australia’s Qantas said it does not plan to take eight A380s still on order with Airbus. A contract for 100 jets Airbus and Iran Air announced this month excludes the 12 A380s originally specified.

“Further fixed cost reduction initiatives will be accelerated so the impact on break-even in 2017 is minimal,” Airbus said of the Emirates deferment.

Dubai-based Emirates earlier this month said it will inaugurate the first-ever commercial A380 service to Morocco and North Africa in March; it currently operates a fleet of 88 A380s and 160 Boeing 777s. It is the largest A380 operator by far, followed by Singapore Airlines. Emirates announced in November that it had retired its last Airbus A330 and A340 widebodies from active service.