(Bloomberg) -- Amazon.com Inc.’s $1.4 billion deal to buy Roomba-maker iRobot Corp. has been cast into doubt after the firm opted not to offer concessions to the European Union.

According to a European Commission site on Thursday Amazon missed the Wednesday deadline to file remedies that might allay any issues antitrust enforcers have.

In December, the EU’s stand-in competition chief Didier Reynders called for Amazon to ensure that it ranks rival robot vacuums fairly when compared to the iRobot brand, after a prospective closing of the deal. 

The deal spread widened to $22 on Wednesday after Politico reported that Amazon wouldn’t offer remedies to allay the EU’s concerns.

The commission currently has a deadline of Feb. 14 to decide whether to approve the iRobot deal, or to block it. The UK cleared the deal in June

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