The Carlisle MP John Stevenson says the International Development secretary Priti Patel was right to resign, even if it made her the second minister to step down in a week.
Some MPs have said her replacement should be a Brexiteer, to maintain the number of cabinet members supporting Britain leaving the EU.
But Mr Stevenson said the Prime Minister, Theresa May, should appoint the best person for that particular job.
When you're in that position, you've got to make sure you follow the correct protocols, she didn't, and it's absolutely correct that she leaves the government.
It's the important criteria, that we get the best people at the top of government."