diff --git a/module/task/model.php b/module/task/model.php
index 6c3bec7982..562aa12173 100644
--- a/module/task/model.php
+++ b/module/task/model.php
@@ -105,7 +105,7 @@ class taskModel extends model
             /* Check duplicate task. */
             if($task->type != 'affair' and $task->name)
             {
-                $result = $this->loadModel('common')->removeDuplicate('task', $task, "execution={$executionID} and story=" . (int)$task->story);
+                $result = $this->loadModel('common')->removeDuplicate('task', $task, "execution={$executionID} and story=" . (int)$task->story . (isset($task->feedback) ? " and feedback=" . (int)$task->feedback : ''));
                 if($result['stop'])
                 {
                     $taskIdList[$assignedTo] = array('status' => 'exists', 'id' => $result['duplicate']);