Contrary to rumours, there is no discord between singers Adam Lambert and Demi Lovato.

The "American Idol" star was reportedly upset with Lovato after she replaced him with Nick Jonas as an opening act for her upcoming tour.

But Lambert clarified his stance on Twitter, saying there is "no beef" between the three, reports aceshowbiz.com.

"Aww I love you all very much. No beef tween @ddlovato & @nickjonas and me. Biz negotiations are complex, why do we care about the #rumors?" Lambert wrote.

Lovato also slammed the publication which spread the rumour.

Lovato and Jonas have been frequent collaborators since their Disney days. In May, they announced a joint label dubbed Safehouse Records with music executive Phil McIntyre.

Lovato's new tour is to support her new studio album "Confident".