Forums mIRC Help Red line instead of grayish

Hi, I reinstalled mIRC, since I formatted my Hard drive.
Now instead of the gray line seperating old chatter from new, I get this:
http://pokit.etf.ba/upload/?pokit73475aa6f2950924842dd59077a7be8e.png
Any help?

I think it was red before too (I don't use it)

try tools --> options --> display --> options --> line marker --> change the colour

Thank you very much