Repetition in Alt Attributes

If I use an in-line unordered list as the basis for a very simple menu, do I risk any SE duplication penalty for a construction like this:

Code:

<div id="menubar">
<ul>
<li><img src="menu.gif" alt="Bullet" /><a href="index.htm">Home</a></li>
<li><img src="menu.gif" alt="Bullet" /><a href="news.htm">News</a></li>
<li><img src="menu.gif" alt="Bullet" /><a href="editorial.htm">Editorial</a></li>
<li><img src="menu.gif" alt="Bullet" /><a href="about.htm">About</a></li>
<li><img src="menu.gif" alt="Bullet" /><a href="contact.htm">Contact</a><img src="menu.gif" alt="Bullet" /></li>
</ul>
</div>

The menu.gif is always a very simple graphic used as a separator between items in, and as end stops to, the menu.

It is the assignment of the same ”Bullet” value to each of the alt attributes that concerns me.