U.K. Brexit Secretary David Davis | Jack Taylor/Getty Images EU toughens Brexit resolution after David Davis interview Move comes after UK Brexit secretary said Brexit deal was ‘more a statement of intent than a legally enforceable thing.’

Brussels didn’t take well to London’s post-Brexit deal bluster.

The remaining EU27 countries have "hardened" the language of a proposed Brexit resolution for this week's European Council summit in response to U.K. Brexit Secretary David Davis' comments on Sunday that last Friday’s Brexit deal with the EU was “more a statement of intent than a legally enforceable thing,” according to three EU diplomats.

At a Monday meeting of sherpas ahead of the summit, at which EU leaders must formally sign off on the agreement with the U.K. that Brexit talks move on to phase 2, diplomats redrafted a summit declaration on Brexit.

The text now also says the U.K. will stay in both customs union and internal market for the time of a transition period, which includes the whole acquis (the body of EU law) and the jurisdiction of the European Court of Justice. While that has always been clear to the EU side, it will be made explicit in the summit resolution “to avoid any ambiguity,” according to one diplomat.

Spelling out what transition means also include making it explicit that the UK will have no representation in any EU body or agency, “neither as a member nor as an observer,” the diplomat said.

The moves came in response to Davis' interview on the Marr Show, during which he said London would not pay any money to the EU if no final trade deal is negotiated with the bloc. “No deal means we won’t be paying the money,” Davis said.

The Brexit secretary subsequently walked back the comments, telling LBC radio on Monday the deal with Brussels is in fact “more than legally enforceable.”

The latest draft of the document also affirms that the negotiations can only progress to phase 2 "as long as all commitments undertaken during the first phase are respected in full and translated faithfully in legal terms as quickly as possible." That language was in a draft released last week.

CLARIFICATION: This story was updated on December 12 to make clear that the language in the document on the commitments undertaken during the first phase was confirmed at the Monday sherpas meeting.