Top Surnames block & Surname Prefix

[SnarfW]

In my site I have placed the Top Surnames HTML, showing a tag cloud.
For names with a surname prefix, the links leading to individual list is incorrect.
For instance the tag cloud shows “van der Lee”, the link is: … /individual-list?surname=van%20der%20Lee. This will not give any hit, since the surname is “Lee”, with prefix “van der”