I'm using the following code to display a 'previous posts' link on my Wordpress blog. 

```
     <nav>
            <ul>
                <li><?php previous_posts_link('Newer Entries &raquo;') ?></li>
</ul
</nav>

```

Problem is, when there ARN'T any previous posts, while the link doesn't display, I still get 

```
<nav>
            <ul>
                <li><</li>
</ul
</nav>

```

Printed out. Is there an if() statement I could wrap around it all so it checks if there are any previous posts, and only prints it out if there are?