[Plugin: SEO Smart Links] Problems with headings

Hello,

this plugin (version 2.7) is destroying some of my headings:

<h5 class=\"right\"><a rel="lightbox[slideshow]" href="https://exampe.com/image01.jpg"><img width="200" height="244" src="https://exampe.com/image01-thumb.jpg" /></a><br />
Title</h5>

Notice the slashes around class attribute of h5. When I turn off “Prevent linking in heading tags (h1,h2,h3,h4,h5,h6).”, it’s not happening, but I wonder, if it might mess up some other headings by linking them.

Thanks,
Martin