Oil giant Royal Dutch Shell must sharply cut its greenhouse gas emissions, in line with the Paris climate agreement, a Dutch court ruled Wednesday in a potentially precedent-setting win for environmentalists.

The Hague District Court ruled Shell’s current emissions reduction plan isn’t sufficient to address its contribution to climate change. The oil company’s emissions policy “is not concrete, has many caveats and is based on monitoring social developments rather than the company’s own responsibility for achieving a CO2 reduction,” the court said in a summary of its ruling.