diff --git a/htdocs/projet/class/task.class.php b/htdocs/projet/class/task.class.php
index 4b2286cb4ca..d625a42e753 100644
--- a/htdocs/projet/class/task.class.php
+++ b/htdocs/projet/class/task.class.php
@@ -479,7 +479,7 @@ class Task extends CommonObject
 
     /**
      * Return list of tasks for all projects or for one particular project
-     * Sort order is on project, then on position of task, and last on creation date of first level task
+     * Sort order is on project, then on position of task, and last on start date of first level task
      *
      * @param	User	$usert				Object user to limit tasks affected to a particular user
      * @param	User	$userp				Object user to limit projects of a particular user and public projects
@@ -519,7 +519,7 @@ class Task extends CommonObject
             if ($projectid) $sql.= " AND p.rowid in (".$projectid.")";
         }
         if ($filteronprojref) $sql.= " AND p.ref LIKE '%".$filteronprojref."%'";
-        $sql.= " ORDER BY p.ref, t.rang, t.datec";
+        $sql.= " ORDER BY p.ref, t.rang, t.dateo";
 
         //print $sql;
         dol_syslog(get_class($this)."::getTasksArray sql=".$sql, LOG_DEBUG);