diff --git a/htdocs/product/stock/list.php b/htdocs/product/stock/list.php
index 057735c49cc..8ccc887641f 100644
--- a/htdocs/product/stock/list.php
+++ b/htdocs/product/stock/list.php
@@ -215,7 +215,7 @@ foreach ($search as $key => $val)
 		if ($search[$key] == '-1') $search[$key] = '';
 		$mode_search = 2;
 	}
-	if ($search[$key] != '') $sql .= natural_search($key, $search[$key], (($key == 'status') ? 2 : $mode_search));
+	if ($search[$key] != '') $sql .= natural_search((($key == 'ref') ? 't.ref' : $key), $search[$key], (($key == 'status') ? 2 : $mode_search));
 }
 if ($search_all) $sql .= natural_search(array_keys($fieldstosearchall), $search_all);
 // Add where from extra fields