diff --git a/htdocs/projet/class/task.class.php b/htdocs/projet/class/task.class.php
index ff1bdbc07f9..0e78eec6422 100644
--- a/htdocs/projet/class/task.class.php
+++ b/htdocs/projet/class/task.class.php
@@ -812,9 +812,11 @@ class Task extends CommonObjectLine
 	 * @param   array   $search_array_options Array of search
 	 * @param   int     $loadextras         Fetch all Extrafields on each task
 	 * @param	int		$loadRoleMode		1= will test Roles on task;  0 used in delete project action
+	 * @param	string	$sortfield			Sort field
+	 * @param	string	$sortorder			Sort order
 	 * @return 	array						Array of tasks
 	 */
-	public function getTasksArray($usert = null, $userp = null, $projectid = 0, $socid = 0, $mode = 0, $filteronproj = '', $filteronprojstatus = '-1', $morewherefilter = '', $filteronprojuser = 0, $filterontaskuser = 0, $extrafields = array(), $includebilltime = 0, $search_array_options = array(), $loadextras = 0, $loadRoleMode = 1)
+	public function getTasksArray($usert = null, $userp = null, $projectid = 0, $socid = 0, $mode = 0, $filteronproj = '', $filteronprojstatus = '-1', $morewherefilter = '', $filteronprojuser = 0, $filterontaskuser = 0, $extrafields = array(), $includebilltime = 0, $search_array_options = array(), $loadextras = 0, $loadRoleMode = 1, $sortfield = '', $sortorder = '')
 	{
 		global $conf, $hookmanager;
 
@@ -954,8 +956,11 @@ class Task extends CommonObjectLine
 			}
 		}
 
-
-		$sql .= " ORDER BY p.ref, t.rang, t.dateo";
+		if ($sortfield && $sortorder) {
+			$sql .= $this->db->order($sortfield, $sortorder);
+		} else {
+			$sql .= " ORDER BY p.ref, t.rang, t.dateo";
+		}
 
 		//print $sql;exit;
 		dol_syslog(get_class($this)."::getTasksArray", LOG_DEBUG);
diff --git a/htdocs/projet/tasks.php b/htdocs/projet/tasks.php
index d3097631a6f..628056f610f 100644
--- a/htdocs/projet/tasks.php
+++ b/htdocs/projet/tasks.php
@@ -124,12 +124,12 @@ $search_array_options = $extrafields->getOptionalsFromPost($taskstatic->table_el
 
 
 // Default sort order (if not yet defined by previous GETPOST)
-if (!$sortfield) {
+/* if (!$sortfield) {
 	reset($object->fields); $sortfield="t.".key($object->fields);
 }   // Set here default search field. By default 1st field in definition. Reset is required to avoid key() to return null.
 if (!$sortorder) {
 	$sortorder = "ASC";
-}
+} */
 
 
 // Security check
@@ -854,7 +854,7 @@ if ($action == 'create' && $user->rights->projet->creer && (empty($object->third
 	// Get list of tasks in tasksarray and taskarrayfiltered
 	// We need all tasks (even not limited to a user because a task to user can have a parent that is not affected to him).
 	$filteronthirdpartyid = $socid;
-	$tasksarray = $taskstatic->getTasksArray(0, 0, $object->id, $filteronthirdpartyid, 0, '', -1, $morewherefilter, 0, 0, $extrafields, 1, $search_array_options);
+	$tasksarray = $taskstatic->getTasksArray(0, 0, $object->id, $filteronthirdpartyid, 0, '', -1, $morewherefilter, 0, 0, $extrafields, 1, $search_array_options, 0, 1, $sortfield, $sortorder);
 
 	// We load also tasks limited to a particular user
 	$tmpuser = new User($db);
@@ -1004,41 +1004,41 @@ if ($action == 'create' && $user->rights->projet->creer && (empty($object->third
 	print '<tr class="liste_titre nodrag nodrop">';
 	// print '<td>'.$langs->trans("Project").'</td>';
 	if (!empty($arrayfields['t.ref']['checked'])) {
-		print_liste_field_titre($arrayfields['t.ref']['label'], $_SERVER["PHP_SELF"], '', '', $param, '', $sortfield, $sortorder, '');
+		print_liste_field_titre($arrayfields['t.ref']['label'], $_SERVER["PHP_SELF"], 't.ref', '', $param, '', $sortfield, $sortorder, '');
 	}
 	if (!empty($arrayfields['t.label']['checked'])) {
-		print_liste_field_titre($arrayfields['t.label']['label'], $_SERVER["PHP_SELF"], "", '', $param, '', $sortfield, $sortorder, '');
+		print_liste_field_titre($arrayfields['t.label']['label'], $_SERVER["PHP_SELF"], "t.label", '', $param, '', $sortfield, $sortorder, '');
 	}
 	if (!empty($arrayfields['t.description']['checked'])) {
 		print_liste_field_titre($arrayfields['t.description']['label'], $_SERVER["PHP_SELF"], "", '', $param, '', $sortfield, $sortorder, '');
 	}
 	if (!empty($arrayfields['t.dateo']['checked'])) {
-		print_liste_field_titre($arrayfields['t.dateo']['label'], $_SERVER["PHP_SELF"], "", '', $param, '', $sortfield, $sortorder, 'center ');
+		print_liste_field_titre($arrayfields['t.dateo']['label'], $_SERVER["PHP_SELF"], "t.dateo", '', $param, '', $sortfield, $sortorder, 'center ');
 	}
 	if (!empty($arrayfields['t.datee']['checked'])) {
-		print_liste_field_titre($arrayfields['t.datee']['label'], $_SERVER["PHP_SELF"], "", '', $param, '', $sortfield, $sortorder, 'center ');
+		print_liste_field_titre($arrayfields['t.datee']['label'], $_SERVER["PHP_SELF"], "t.datee", '', $param, '', $sortfield, $sortorder, 'center ');
 	}
 	if (!empty($arrayfields['t.planned_workload']['checked'])) {
-		print_liste_field_titre($arrayfields['t.planned_workload']['label'], $_SERVER["PHP_SELF"], "", '', $param, '', $sortfield, $sortorder, 'right ', '', 1);
+		print_liste_field_titre($arrayfields['t.planned_workload']['label'], $_SERVER["PHP_SELF"], "t.planned_workload", '', $param, '', $sortfield, $sortorder, 'right ', '', 1);
 	}
 	if (!empty($arrayfields['t.duration_effective']['checked'])) {
-		print_liste_field_titre($arrayfields['t.duration_effective']['label'], $_SERVER["PHP_SELF"], "", '', $param, '', $sortfield, $sortorder, 'right ', '', 1);
+		print_liste_field_titre($arrayfields['t.duration_effective']['label'], $_SERVER["PHP_SELF"], "t.duration_effective", '', $param, '', $sortfield, $sortorder, 'right ', '', 1);
 	}
 	if (!empty($arrayfields['t.progress_calculated']['checked'])) {
 		print_liste_field_titre($arrayfields['t.progress_calculated']['label'], $_SERVER["PHP_SELF"], "", '', $param, '', $sortfield, $sortorder, 'right ', '', 1);
 	}
 	if (!empty($arrayfields['t.progress']['checked'])) {
-		print_liste_field_titre($arrayfields['t.progress']['label'], $_SERVER["PHP_SELF"], "", '', $param, '', $sortfield, $sortorder, 'right ', '', 1);
+		print_liste_field_titre($arrayfields['t.progress']['label'], $_SERVER["PHP_SELF"], "t.progress", '', $param, '', $sortfield, $sortorder, 'right ', '', 1);
 	}
 	if (!empty($arrayfields['t.progress_summary']['checked'])) {
 		print_liste_field_titre($arrayfields['t.progress_summary']['label'], $_SERVER["PHP_SELF"], "", '', $param, '', $sortfield, $sortorder, 'center ', '', 1);
 	}
 	if ($object->usage_bill_time) {
 		if (!empty($arrayfields['t.tobill']['checked'])) {
-			print_liste_field_titre($arrayfields['t.tobill']['label'], $_SERVER["PHP_SELF"], "", '', $param, '', $sortfield, $sortorder, 'right ');
+			print_liste_field_titre($arrayfields['t.tobill']['label'], $_SERVER["PHP_SELF"], "t.tobill", '', $param, '', $sortfield, $sortorder, 'right ');
 		}
 		if (!empty($arrayfields['t.billed']['checked'])) {
-			print_liste_field_titre($arrayfields['t.billed']['label'], $_SERVER["PHP_SELF"], "", '', $param, '', $sortfield, $sortorder, 'right ');
+			print_liste_field_titre($arrayfields['t.billed']['label'], $_SERVER["PHP_SELF"], "t.billed", '', $param, '', $sortfield, $sortorder, 'right ');
 		}
 	}
 	// Contacts of task, disabled because available by default jsut after
@@ -1049,7 +1049,7 @@ if ($action == 'create' && $user->rights->projet->creer && (empty($object->third
 	*/
 
 	if (!empty($arrayfields['t.budget_amount']['checked'])) {
-		print_liste_field_titre($arrayfields['t.budget_amount']['label'], $_SERVER["PHP_SELF"], "", "", $param, '', $sortfield, $sortorder, 'center ');
+		print_liste_field_titre($arrayfields['t.budget_amount']['label'], $_SERVER["PHP_SELF"], "t.budget_amount", "", $param, '', $sortfield, $sortorder, 'center ');
 	}
 
 	if (!empty($arrayfields['c.assigned']['checked'])) {