Prime Minister Shinzo Abe tapped a veteran of the Trans-Pacific Partnership negotiations as his new agriculture minister as he seeks to wrap up an agreement this year that will require wringing concessions from the powerful farm lobby.

Abe reappointed Yoshimasa Hayashi as farm minister just five months after he was replaced in the job by Koya Nishikawa, who quit Monday following assertions he took donations from a company in the sugar industry. His alleged misdemeanor would have been in conflict with his role in negotiations over agricultural tariffs in the TPP free trad talks.

The Abe administration on Tuesday played down the impact of the third resignation of Cabinet member in less than six months on the TPP talks and Abe’s drive to reform the agriculture sector.

Chief Cabinet Secretary Yoshihide Suga said he was not concerned about any adverse effect on farm policy, citing Hayashi’s previous experience in the role.

Abe is pushing to ease protections for the agriculture industry as part of a broader push for structural reforms to spur economic growth.

He has made some progress in efforts to weaken the farm lobby’s influence, and his Liberal Democratic Party this month managed to remove the power of JA-Zenchu, the national agricultural cooperative, to audit local farming groups.

While Nishikawa is a longtime member of the LDP’s farm policy “tribe,” his departure will have limited impact on these policies, according to Tobias Harris, an analyst at the Teneo Intelligence advisory firm.

“Hayashi has continued to play an important role in agricultural policy; as part of an ‘inner circle’ of LDP agricultural policy experts he was involved in securing JA-Zenchu’s acquiescence to the government’s plans for reforming the cooperative system,” Harris wrote in a research note Monday. “Hayashi should have little difficulty managing farmers’ opposition to TPP and reform legislation.”

Hayshi was farm minister when Japan entered the TPP negotiations in 2013, a move he said late Monday was a “milestone.”

“We will continue with intense negotiations, although difficult issues remain,” Hayashi told reporters.

Economy minister Akira Amari said earlier this month that substantial progress has been made in negotiations for the trade pact, and that it would be desirable for the 12 nations involved to hold a ministerial meeting early in spring.

If completed, the TPP would link nations with about $28 trillion in annual economic output, or about 39 percent of the global total. Other members include the U.S., Australia, Brunei, Canada, Chile, Malaysia, Mexico, New Zealand, Peru, Singapore and Vietnam.

Nishikawa’s resignation came after two female minsters, trade chief Yuko Obuchi and Justice Minister Midori Matsushima, quit in October over allegations of financial impropriety. Abe recovered from that double blow to win by a landslide in December’s general election.

Still, a series of scandal-linked resignations contributed to the unraveling of his first administration in 2007 after less than a year.

“Even though Abe is seen as a strong political leader, he’s still struggling to make the right appointments,” said independent political analyst Minoru Morita. “This serves as a reminder to Abe that his economic policies may not go as smoothly as he hopes.”

Nishikawa said Feb. 17 that he had returned all ¥1 million he received from a company operated by a sugar industry association, according to the Asahi Shimbun. Sugar is one of the five key agricultural products that Japan wants to protect in any TPP agreement.

Abe’s previous spell as prime minister was hampered by his appointments of farm ministers.

Toshikatsu Matsuoka killed himself in May 2007 after being questioned in the Diet for receiving donations from contractors associated with a developer under investigation for rigging construction bids.

His replacement, Norihiko Akagi, resigned a few months later over separate impropriety allegations, while his successor, Takehiko Endo, lasted just a week in the job — again over a financial scandal.