[Zope] zope: trim space in a select tag

Hello ! Can you help me ? I have a data base with in some fields's value who have 3 spaces between words and I received in the browser on a select tag after a query the value's fields with 1 space between words. In the source of the page, it's good (3 spaces) but on the browser it's not good (1 space). And of course, it's a big problem for the next query who used the field's value. Thank's a lot.