Russia’s Aeroflot will delay delivery of its 22 Airbus A350 XWBs to between 2018 and 2023. Deliveries were originally scheduled from between 2018 and 2020. The decision was approved at a company shareholders meeting.

The carrier did not comment on the move, but industry experts say there are two possible reasons for the delay. One is that Aeroflot has converted part of its A350-800 order into -900s. The company said it will now get eight -800s and 14 -900s, though earlier the order was split into 18 -800s and four -900s. The second possible reason is the carrier’s order for 16 Boeing 777s, which experts believe could cause overcapacity in the widebody segment of the Russian market. Deliveries started at the beginning of the year.

Aeroflot ordered 22 A350 XWBs in 2007. Deliveries, which were originally scheduled from 2015, were later postponed to 2018. According to Aeroflot, the deal is now valued at $3.13 billion excluding customs duties.

Aeroflot fleet includes 22 Airbus A330s, 23 A321s, 51 A320s and 15 A319s; four Boeing 777s, five 767s and one 737; six Ilyushin Il-96s; and 10 Sukhoi Superjet 100s.