diff --git a/htdocs/core/class/html.formother.class.php b/htdocs/core/class/html.formother.class.php
index dfd70a075f0..ae1ec52a788 100644
--- a/htdocs/core/class/html.formother.class.php
+++ b/htdocs/core/class/html.formother.class.php
@@ -481,12 +481,14 @@ class FormOther
         $tasksarray=$task->getTasksArray($modetask?$user:0, $modeproject?$user:0, $projectid, 0, $mode);
         if ($tasksarray)
         {
-            print '<select class="flat" name="'.$htmlname.'">';
+            print '<select class="flat" name="'.$htmlname.'" id="'.$htmlname.'">';
             if ($useempty) print '<option value="0">&nbsp;</option>';
             $j=0;
             $level=0;
             $this->_pLineSelect($j, 0, $tasksarray, $level, $selectedtask, $projectid, $disablechildoftaskid);
             print '</select>';
+
+            print ajax_combobox($htmlname);
         }
         else
         {