Hank Williams III is hoping to clarify his stance on the casting decisions made for the upcoming biopic on about his grandfather's life.

A TMZ article from June 18 claimed that the singer "blasted" the film for choosing British actor Tom Hiddleston to play Hank Williams rather than casting an American, with Williams singling out Matthew McConaughey as the actor best fit for the role.

Some confusion followed the story, causing Williams to clarify his thoughts on casting in a lengthy post on his Facebook page.

"To do a Hank Williams movie the way it should be done you need certain aspects in the mix to make right," he says. "The main Reason I said Matthew McConaughey would be a good person for this role is because of he has played many roles as a Southern man. And he is from the South. And that is something no amount of money or acting classes can put into a role."

He adds, "The other reason I thought Matthew would be a good fit for the role is because he has a natural arrogance aka fire that is needed for this role. Hank Sr was very very sure of himself and basically very cocky. And Matthew always brings that fire to the table in every role he play's. Tom's feel is just a bit different in all the roles I have scene him act in ... it just seems strange to cast someone who is so far away from the roots of what this film is supposed to be about."

The film, titled 'I Saw the Light,' is set to begin production in Louisiana in October.