City Council Speaker Corey Johnson has changed his mind about doing away with the public advocate’s office after serving in the job temporarily for seven weeks.

“I don’t support the elimination of this office,” said Johnson, who previously questioned whether the office and its $3.5 million budget should be abolished.

“I think before I was in this position I may have gotten caught up a little bit in the thinking around the amount of money that is associated with it because there were nebulous functions with the office. But being here, … I think [the office] is a real key important place.”

Johnson made the comments after walking Councilman Jumaane Williams (D-Brooklyn) from City Hall across the street to the Municipal Building, where he’ll take over as public advocate next week after winning Tuesday’s special election.

Johnson started serving as acting public advocate after the office’s previous occupant, Letitia James, was sworn in as state attorney general on Jan. 1.

Prior to taking on the dual role, Johnson would not rule out supporting a bill introduced in November by Councilman Kalman Yeger (D-Brooklyn) to end the office.

Williams also spent time at City Hall Wednesday chatting privately with Mayor Bill de Blasio.

Afterwards, De Blasio, a former public advocate himself, told reporters the so-called, government watchdog post is “tailor made” for Williams.

Both said they hoped to have a good working relationship but refused to discuss the details of their meeting.