Mercedes will evaluate the impact a modified tailpipe could have on noise emissions at next week's test in Spain.
Reports earlier in the day suggested that a solution could be tested during free practice on Friday, but Mercedes insists that any potential changes will not be trialled until next week's two-day test at the Circuit de Barcelona-Catalunya.
Criticism about the noise produced by the sport's 1.6 litre v6 power units has been a prominent feature of the 2014 season, with several race promoters speaking out against the sound of the new engines.
'To clarify: we will not be running any kind of different exhaust solution tomorrow during practice as is being reported', Mercedes posted on their official Twitter account.
'Mercedes will evaluate a prototype solution during next week's test to assess its impact on the tailpipe noise.
'It's a first step in a development process to address the feedback from our sport's fans about these mega new hybrid Power Units.'