However, he said the situation showed the value of the Maori Party being part of the Government.
The Government has indicated it will not use the exact wording of section nine of the State Owned Enterprises Act, rather the clause would "reflect the concepts" of that section, which requires the Crown not to act in a manner inconsistent with the principles of the Treaty of Waitangi.
Dr Sharples said his party would scrutinise the wording carefully. Section nine remained the preference and he was yet to see a satisfactory explanation for why it could not be used.
Finance Minister Bill English denied it was a backdown by the Government. Although officials had initially believed a Treaty clause might deter investors, he said he now believed it would give them certainty.
"As it turned out, when we've gone through the discussions it's become clear that if there was nothing in the legislation then investors won't know how the various Maori interests will be dealt with.
"It is important that it's clear the Treaty obligation belongs to the Crown. People who invest in those companies won't themselves, as investors, be obliged to pay attention to the Treaty of Waitangi."