diff --git a/htdocs/projet/tasks/list.php b/htdocs/projet/tasks/list.php
index 5c2f853c3ea..b6e19eb1c94 100644
--- a/htdocs/projet/tasks/list.php
+++ b/htdocs/projet/tasks/list.php
@@ -752,7 +752,8 @@ if (!empty($conf->categorie->enabled) && $user->rights->categorie->lire) {
$categoriesProductArr = $form->select_all_categories(Categorie::TYPE_CUSTOMER, '', '', 64, 0, 1);
$categoriesProductArr[-2] = '- '.$langs->trans('NotCategorized').' -';
$moreforfilter .= Form::multiselectarray('search_category_customer_list', $categoriesProductArr, $searchCategoryCustomerList, 0, 0, 'minwidth300', 0, 0, '', 'category', $tmptitle);
- $moreforfilter .= ' ';
+ $moreforfilter .= ' ';
+ $moreforfilter .= $form->textwithpicto('', $langs->trans('UseOrOperatorForCategories') . ' : ' . $tmptitle, 1, 'help', '', 0, 2, 'tooltip_cat_cus'); // Tooltip on click
$moreforfilter .= '';
}