An ethics complaint has been filed against the campaign of Michael Grimm, who is making a comeback bid for his old Staten Island congressional seat.

The complaint filed with the Federal Elections Commission claims that Grimm’s campaign has been getting free services from Michael Caputo, who has served as Grimm’s communications strategist since announcing his candidacy last fall.

Caputo does not show up as a paid employee in Grimm’s most recent campaign filing.

Nor does Grimm’s campaign committee, Friends of Michael Grimm, and its treasurer, Nancy Watkins, report that the candidate is indebted to Caputo by listing his services as a loan.

“Michael Caputo appears to have violated [FEC law]… by making an illegal in-kind contribution. And, the Grimm campaign and its treasurer appear to have accepted illegal in-kind contributions from Mr. Caputo,” Donna Fagan, a Staten Island Republican Party activist who backs incumbent GOP Rep. Dan Donovan, said in the FEC complaint dated Feb. 23.

Grimm, who pleaded guilty to tax fraud in 2014 and served time in prison, is challenging his successor, Donovan, in a GOP primary.

Caputo dismissed the complaint as petty and without basis.

“There’s nothing illegal here. I’m being paid by the Grimm campaign,” said Caputo.

Caputo said his $5,000 per month retainer will show up in the next campaign filing.

“The anti-Trump forces who are trying to knock Michael Grimm out of the race for Congress will need something else to focus on,” Caputo said.

Caputo is no stranger to controversy. He resigned as a press aide to the Trump campaign in 2016 after tweeting “Ding dong, the witch is dead” when then-campaign manager Corey Lewandowski was fired. Caputo also was interviewed during congressional probes into alleged ties between President Trump’s 2016 campaign and Russia. He is not accused of wrongdoing.