President Donald Trump is disregarding his midterm promise of a mysterious 10 percent middle-class tax cut, the announcement of which came as a complete surprise to even congressional Republicans at the time.

Treasury Secretary Steven Mnuchin told Bloomberg Tuesday that instead, the administration would focus on fixing mistakes in the 2017 tax overhaul.

“I’m not going to comment on whether it is a real thing or not a real thing,” Mnuchin said of Trump’s tax cut promise. “I’m saying for the moment we have other things we’re focused on.”

Back in October, Mnuchin said that he and House Republicans were hard at work on the middle-class tax cuts and would release a plan shortly. That plan never materialized.