Arnold Schwarzenegger is hitting back at Donald Trump Donald John TrumpBarr criticizes DOJ in speech declaring all agency power 'is invested in the attorney general' Military leaders asked about using heat ray on protesters outside White House: report Powell warns failure to reach COVID-19 deal could 'scar and damage' economy MORE for mocking the low ratings of his debut as host of “New Celebrity Apprentice.”

"Wow, the ratings are in and Arnold Schwarzenegger got 'swamped' (or destroyed) by comparison to the ratings machine, DJT,” tweeted the president-elect, who is still the show’s executive producer.

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"I wish you the best of luck and I hope you'll work for ALL of the American people as aggressively as you worked for your ratings,” the "Terminator" star shot back.

I wish you the best of luck and I hope you'll work for ALL of the American people as aggressively as you worked for your ratings. — Arnold (@Schwarzenegger) January 6, 2017

Monday’s premiere drew 4.9 million viewers — a 44 percent drop from the 2015 season premiere, which Trump hosted.

Schwarzenegger’s debut suffered as a result of being forced to compete with the premiere of ABC’s "The Bachelor," which scored 1.7 million more viewers.