Aerosmith front man Steven Tyler has ordered Donald Trump to stop using his band's classic hit "Dream On" during campaign appearances.

According to The Hollywood Reporter, Tyler's reps sent a cease and desist letter to the presidential hopeful's campaign organization. It was the second time Trump had been told to stop using the song, as he was first warned in August during an event in Mobile, Alabama.

"Trump for President does not have our client's permission to use 'Dream On' or any of our client's other music in connection with the Campaign because it gives the false impression that he is connected with or endorses Mr. Trump's presidential bid," read the warning letter.

Trump is an avid fan of Aerosmith's music. Last year the business mogul attended the band's concert in Newark, New Jersey, taking to Twitter afterward to praise Tyler's performance.

Tyler is a registered Republican and a friend of Trump's. The rock star was once a judge on Trump's Miss USA pageant and even traveled with the billionaire to Russia.

However, despite appearing as Trump's personal guest at August's Republican debate, Tyler has not openly endorsed Trump's presidential campaign.

Tyler's legal team insists the issue is not about politics, but business. Trump's campaign simply does not have a license to perform the song in public.

"This is not a political nor personal issue with Mr. Trump," attorney Dina LaPolt said in a statement. "Steven works tirelessly with both Republicans and Democrats regarding copyright reform and his position has always been consistent regarding copyright and intellectual property. Simply, one must get permission from the music creators. Steven wrote 100% of 'Dream On,' and this is about the un-authorized use of his property."

The cease and desist letter grants Trump's campaign 24 hours to acknowledge the request before pursuing legal action.

Other music artists have contacted Trump about using their music in the past. The presidential candidate blasted Neil Young, after the singer asked him to stop playing his hit "Rockin' in the Free World."