The Organization of the Petroleum Exporting Countries (OPEC) ended its policy meeting on Friday without agreeing to lower production.

For the first time in decades, oil ministers dropped any reference to the group’s output ceiling, highlighting disagreement among members about how to accommodate Iranian barrels once Western sanctions are lifted.

“A stronger dollar and the aftershock of Friday’s OPEC meeting are weighing on the oil market,” said Tamas Varga, oil analyst at brokerage PVM Oil Associates in London.

Brent crude prices, the globally traded benchmark, were down 38 cents at $42.62 a barrel at 0929 GMT, close to their 2015 low of $42.23. U.S. crude was trading at $39.42 a barrel, down 55 cents.

The dollar was up against a basket of currencies.

Analysts at Barclays said the lack of an OPEC production target in its written announcement was a sign of discord.

“Past communiques have at least included statements to adhere, strictly adhere, or maintain output in line with the production target. This one glaringly did not,” they said.

OPEC’s output of more than 30 million barrels per day (bpd) has compounded an oil glut, pushing production 0.5 million to 2 million bpd beyond demand and putting many producers under pressure, especially small-sized U.S. shale drillers that have piled up large amounts of debt.

Saudi Arabia, the world’s biggest oil exporter, is banking on producers of unconventional oil to buckle for output to fall.

Amin Nasser, Chief Executive Officer of Saudi Aramco, said at a conference in Doha on Monday he hoped to see oil prices adjust at the beginning of next year as unconventional oil supplies start to decline.

Others disagreed. Patrick Pouyanne, Chief Executive Officer of French oil company Total, said at the same event that he did not expect prices to recover next year as production growth was set to outstrip a rise in demand.

“It is not unreasonable to assume that downward pressure on prices will remain for the foreseeable future, as it will take time for low prices to materially scale back production,” said analysts at Cenkos Securities.

In a sign investors expect prices to remain weak over years to come, WTI forward contracts out to 2024 have dropped below $60 a barrel.