May, who made the remarks in an interview with the BBC, once again defended her way of passing the legislation that will pull Britain out of the European Union.
"We need to recognize the role of parliament, but ensure that the government's hands can't be tied in negotiations and that parliament does not overturn the will of the people," May said on Sunday.
On Tuesday, May defused a rebellion in parliament over her Brexit plans after she was forced to compromise and hand lawmakers greater control over Britain’s exit from the bloc.
May held talks with more than 14 Tory rebels in her Commons office that lasted 11 hours, giving them personal assurances that she would agree to the broad thrust of their proposals.
The premier's concession may mean lawmakers could have more power if she fails to seal a Brexit deal, possibly resulting in a softer approach to Britain’s divorce. However, presently, MPs will not be able to send the government back into negotiations if they refuse to accept an agreement with the bloc.
The British government has faced fierce criticism both at home and by the EU for its lack of clarity on its Brexit strategy.
In Britain’s 2016 referendum, 52 percent, or 17.4 million people, voted to leave the EU while 48 percent, or 16 million, voted to stay.