Apple’s insanely expensive new desktop computer could see its price tag climb even higher.

President Trump on Friday tweeted that he would not give Apple any relief on tariffs placed on parts for its recently announced Mac Pro that is made at Chinese factories.

The new Mac Pro is slated for release this fall with an entry-level price of $5,999. It’s designed to be paired with Apple’s new $4,999 Pro Display XDR monitor, which in turn is mounted on a $999 Pro Stand.

That means Apple’s new supercomputer will cost at least $12,000 before boosting any of its specs.

The eye-popping tab could climb even higher if Apple doesn’t end up eating the costs of the levies itself, as any Chinese-made parts will be subject to a proposed 25% tax.

“Apple will not be given Tariff wavers (sic), or relief, for Mac Pro parts that are made in China,” Trump tweeted. “Make them in the USA, no Tariffs!”

The Mac Pro had been assembled at a plant in Austin, Texas, since 2013, but Apple announced this year that its new computer would be made in China.

Apple earlier this month requested a tariff waiver on parts for its forthcoming Mac Pro computer, noting in a filing that “there are no other sources for this proprietary, Apple-designed component.”

Apple shares were up 0.5% on Friday morning, at $208.