Theresa May is reportedly ready to lay down the law to her Cabinet after a series of leaked reports about Philip Hammond.
This follows a report where an unnamed minister accused the Chancellor of trying to interfere with Brexit as the negotiations continue in Brussels.
Hammond was also quoted as saying public sector workers were overpaid and mocking women's ability to drive.
The Prime Minister used a drinks party on the terrace of the House of Commons to firmly put an end to "backbiting."
Now she is expected to use Tuesday's weekly Cabinet meeting to remind ministers the content of these meetings is sensitive, and must therefore remain private.
May's spokesman told reporters: "Cabinet must be able to hold discussions of policy in private. The Prime Minister will be reminding her colleagues of this."