Nevada Gov. Brian Sandoval (R) on Tuesday said his vote for Donald Trump was “not sure” anymore, thanks to the presumptive Republican nominee’s most recent criticism of minorities.

“I will only say that you can’t defend the indefensible,” Sandoval told the Las Vegas Review-Journal.

As Nevada’s first Hispanic governor and a former federal judge, Sandoval dismissed Trump’s argument that U.S. District Judge Gonzalo Curiel should be recused from overseeing civil lawsuits against Trump University because of his “Mexican” heritage.

Trump said separately that he would have the same concerns about a Muslim judge, given the comments he’s made about Islam over the course of his presidential campaign.

“Now, he’s talked about this judge and he’s also made a reference to another minority group that he would have the same concerns about, which obviously concerns me as well,” Sandoval told the Review-Journal.

The Nevada governor was reluctant to support Trump, but did release a statement in early May after Trump cleared the GOP field saying he’d vote for the real estate mogul.

“Elections are about making choices and the Democratic nominee is simply not an option,” Sandoval said at the time.