Small code error.

There is a bug in the discount coupon code when you add to cart items that don't add up to the correct amount and you try and add the coupon.

You must spend at least £40.00 to redeem this coupon

Code:
<div class="messageStackError">You must spend at least &amp;pound;40.00 to redeem this coupon</div>
should be

You must spend at least £40.00 to redeem this coupon

Code:
<div class="messageStackError">You must spend at least &pound;40.00 to redeem this coupon</div>
Does anyone know how to fix?