Using the shortcode of the Directories-plugin the More-info link to the listing returns an error-mes

Using the shortcode of the Directories-plugin the More-info link to the listing returns an error-message in Chrome: redirection loop-message.

The More info-text links to http://www.duurzamegemeente.nl/listing/kasbeck-contentprojecten/

but it keeps going to another url:

http://www.duurzamegemeente.nl/gemeentelijk-beleid-duurzaamheid/kasbeck-contentprojecten/

How is this to be fixed for now and all future instances?

Thanks for your reply in advance,

Casper