Need to hide webform description if it's blank

I'm using the Webform module to create a form and all is going well, but it's creating the HTML for the description field even if there is no description (help text) present. Here's what's getting displayed:

The problem is that the "p" tag is throwing up some CSS that I don't need in this case. Is there a way to only print the HTML for the description if the description field has actual data in it?

Thanks!