app/views/kaminari/_page.html.erb
<% if page.current? %>
<li class="active"><%= link_to page, "#", opts = {:remote => remote, :rel => page.next? ? 'next' : page.prev? ? 'prev' : nil} %></li>
<% else %>
<li><%= link_to page, url, opts = {:remote => remote, :rel => page.next? ? 'next' : page.prev? ? 'prev' : nil} %></li>
<% end %>