diff --git a/htdocs/core/lib/company.lib.php b/htdocs/core/lib/company.lib.php
index fc34c287a34..0893c0ef0d9 100644
--- a/htdocs/core/lib/company.lib.php
+++ b/htdocs/core/lib/company.lib.php
@@ -1315,7 +1315,8 @@ function show_actions_done($conf, $langs, $db, $filterobj, $objcon='', $noprint=
     if (! empty($conf->agenda->enabled))
     {
         // Recherche histo sur actioncomm
-        $sql = "SELECT a.id, a.label,";
+	    // @since PR #9972, add DISTINCT.
+        $sql = "SELECT DISTINCT a.id, a.label,";
         $sql.= " a.datep as dp,";
         $sql.= " a.datep2 as dp2,";
         $sql.= " a.note, a.percent,";