[Plugin: WordPress SEO] tag title uppercase

Hello,
i’m using http://wordpress.org/extend/plugins/wordpress-seo/ on a blog where i have tags in lowercase.

The “problem” is that the title for the tag archives look ugly, because they start with the lowercase tag (example: <title>tag – WordPress site</title>).

Is there a way to automatically change to uppercase the tag in the title?

p.s. I wouldn’t really like to change the tags to uppercase…