Scarlett Johansson has ended her relationship with a humanitarian group after being criticised over her support for an Israeli soda maker company that operates in the West Bank.

A statement released by Johansson’s spokesman on Wednesday said the 29-year-old actress has ‘a fundamental difference of opinion’ with Oxfam International because the humanitarian group opposes all trade from Israeli settlements, saying they are illegal and deny Palestinian rights.

Earlier this month, The Avengers and Her actress signed on as the first global brand ambassador of SodaStream International Ltd., and she’s set to appear in an ad for the at-home soda maker during the Super Bowl on Sunday.

SodaStream has come under fire from pro-Palestinian activists for maintaining a large factory in an Israeli settlement in the West Bank, a territory captured by Israel in 1967 and claimed by the Palestinians.

Johansson had served as a global ambassador for Oxfam since 2007, raising funds and promoting awareness about global poverty.