New Zealand and Australian casino operator SkyCity Entertainment Group posted an 18% rise in its fiscal H1 profits despite a significant downturn in its Asian VIP gambling business.

Figures released Wednesday show SkyCity’s revenue falling 5.8% to NZ$533m (US $387.2m) in the six months ending December 31, 2016. Despite the decline, after-tax profits rose 18% to $83.8m, although this was largely due to a favorable comparison with H1 2016, which featured over $10m in write-downs and write-offs.

This half’s headline number was the “significant reduction” in SkyCity’s International Business (IB) segment, which is what the rest of the casino world calls Asian (primarily Chinese) VIP gamblers. SkyCity warned last October that China’s renewed crackdown on overseas casino operators luring its high-rollers would have an adverse effect on the company’s performance, and they weren’t lying.

Group IB turnover and revenue each fell 38.7% in H1 as the number of VIPs traveling to SkyCity properties tumbled and those that did come spent less while IB bad debt provisions increased. Despite a higher than average win rate, IB earnings margins fell from 23.6% to just 12% due to fixed costs, which SkyCity is now reviewing to help right the ship.