Rio Tinto Group (ASX:RIO) said it will allow Australian shareholders to vote on a resolution seeking an independent review of the mining giant's dual-listing structure at the company's annual general meeting on May 1, according to an amendment notice filed to the Australian bourse on Tuesday.

This comes after repetitive calls from activist investor Palliser Capital to abandon the mining firm's primary listing in London and consolidate its shares on the Australian Securities Exchange.

In a statement on Tuesday, Palliser Capital welcomed the amendment, saying that the original notice excluding the structure review resolution was a "misstep [that] effectively disenfranchised 23% of shareholders from having their say on the matter."