W3C Validation fails on Category page

When you run the category page (with html5 doctype) through the W3C validator it reports errors:

sort=p.sort_order&order=ASC
sort=pd.name&order=ASC
sort=pd.name&order=DESC
sort=p.price&order=ASC
sort=p.price&order=DESC
sort=rating&order=DESC
sort=rating&order=ASC
p.model&order=ASC
p.model&order=DESC

When replacing those & to & the sort fuction is not working like it should.
What changes are needed to get it pass W3C validation?

This & is meant to be "logical AND" and not a plain &(plus) from my experience... You cannot change this to &amp.

I know this thread was opened a couple months ago but just in case anyone stumbles upon this, I discovered a fix for this issue not too long ago.

Expanism, you were very close with the fix but I found it will only work when the HTML entity number is used instead of the entity name.

As also mentioned on the page linked to below, W3C validation seems to break only when SEO URL's are activated.

http://forum.opencart.com/viewtopic.php ... 55#p304155

Thank you Storm Cloud, that did the trick! Good validations