R&B icon Bobby Brown is sticking to his word: drugs did not play a part in the tragic death of his former wife and late gospel and R&B legend, Whitney Houston.

In fact, he stands so close by this relief that he believes that Whitney’s death certificate should be amended to reflect what he believes was her true cause of death.

TMZ caught up with Bobby to gain more insight into his previously shared thoughts on Whitney’s death where he told Rolling Stone that he didn’t believe any substances were in her system at the time of her death.

“You know what?” he said. “It wasn't drug use; it was…her heart was broke.”

When the reporter asked about her death certificate, Bobby said he’d love for it to be changed. Earlier in the conversation, he also had more to say about the person legally responsible for the death of his daughter Bobbi Kristina Brown, Nick Gordon.

“I think justice should be served,” he said. “Period.”

Listen to Bobby add to his thoughts on the music icon and his 22-year-old baby girl below.