diff --git a/module/task/model.php b/module/task/model.php
index e97f896780..e849400126 100755
--- a/module/task/model.php
+++ b/module/task/model.php
@@ -1351,7 +1351,7 @@ class taskModel extends model
             if($task->status == 'closed')          $task->assignedTo = 'closed';
             if(isset($task->assignedTo) and $oldTask->assignedTo != $task->assignedTo) $task->assignedDate = $now;
 
-            if(strpos(',doing,pause,', $task->status) and empty($teams) and empty($task->left))
+            if(strpos(',doing,pause,', $task->status) and empty($teams) and empty($task->left) and $task->parent >= 0)
             {
                 dao::$errors[] = sprintf($this->lang->task->error->leftEmptyAB, zget($this->lang->task->statusList, $task->status));
                 return false;