This year’s record murder-free lucky streak in crime-riddled East New York ended Sunday when a man was fatally shot during a family argument, police said.

Jahimel Gayle, 37, was found shot in the neck and shoulder inside a first-floor apartment on Hendrix Street near Sutter Avenue around 12 p.m. — the first homicide of the year for the Brooklyn neighborhood’s 75th Precinct.

“We kind of didn’t want to talk about [the no-murder record] because we didn’t want to jinx it,” said a 47-year-old resident who only gave her first name, Betty.

“I was thanking God’’ for the lack of homicides, she said. “I spoke too soon.”

Last year, the precinct had 11 slayings, the city’s second highest.

Authorities credited the lack of killings to a crackdown on gangs — and a change in crooks’ habits.

“It is a combination of taking down gangs and the shift from street crimes like drugs to white-collar crimes — stolen checks and credit-card fraud,” a Brooklyn cop said.

Jahmorley O. Gayle, the victim’s 32-year-old brother, was arrested and charged with murder and criminal possession of a weapon for the slaying.

Police said Jahmorley called 911 after firing at his brother, who was pronounced dead at the scene. Authorities are still investigating what caused the dispute, but said both men have a history of drug arrests.

The killing comes two days after the New York Times heralded the precinct’s no-slay stretch.