Downing Street has denied that David Cameron has ordered his ministers to back him in the EU referendum or leave the government.
The PM had told journalists everyone in government had “signed up” to his plans as set out in the Tory manifesto.
This led to criticism from some Conservative MPs, who said ministers should be free to vote as they wish.
But Mr Cameron’s spokeswoman said reporters at the G7 Summit in Germany had “over interpreted his remarks”.
She said he had referred to the period of the negotiations, rather than the referendum campaign itself.