How to configure fsearchintable extension template to avoid displaying duplicated results

PROBLEM:
When we use the search form of this extension, the result pages contains results duplicated.

SOLUTION:
We added the following lines in the fesearchintable extension template under the tt_content.listItem section to display also the tt_content header:




15 = TEXT

15.field = header

15.wrap = - <b><i>|</i></b><br />