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Sebastian Vettel has called the FIA's plans to stop drivers changing their helmet designs "a joke".

This season drivers will have to stick to one design for the entire year, putting an end to novelty designs while encouraging drivers to build up their brand identity. However, Vettel used to be known for switching his helmet race to race and, with several teams struggling financially, he said the sport should be focusing on bigger issues.

"I think it's a joke to be honest," he said. "There are more important things to decide for the future and that seems to be the only one they can conclude on."

Vettel said he would willingly flout the ban if it only results in a fine.

"I don't know what is the penalty. If it is a little fine with money for charity, then I am happy to keep changing my helmet."

The FIA has confirmed the regulation in the 2015 regulations.

"In order for drivers to be easily distinguished from one another whilst they are on the track, the crash helmet of each driver must be presented in substantially the same livery at every Event during a Championship season," reads Article 21,1 of the F1 Sporting Regulations.

© ESPN Sports Media Ltd.