diff --git a/htdocs/mrp/class/mo.class.php b/htdocs/mrp/class/mo.class.php
index 274782a14ea..1d04852efea 100644
--- a/htdocs/mrp/class/mo.class.php
+++ b/htdocs/mrp/class/mo.class.php
@@ -1487,7 +1487,7 @@ class MoLine extends CommonObjectLine
 	public function fetch($id, $ref = null)
 	{
 		$result = $this->fetchCommon($id, $ref);
-		if ($result > 0 && !empty($this->table_element_line)) $this->fetchLines();
+
 		return $result;
 	}