Apple leather case - indentation

Anyone know how to remove an indentation from the back of the Apple leather case? I used it in a flipbelt. The phone is the Plus so the fit in the flipbelt is very tight snug. I used it yesterday and ended up with a lengthwise indentation in the leather. The leather is not scratched or dug up but just has an annoying mark.

I tried using leather conditioner on it and then a hair dryer to heat it up to soften and rub out the mark but neither worked.

Any suggestions to remove the indentation mark without further damage to the leather?

 

Thanks for the response. It's actually stating to grow on me.