diff --git a/libraries/legacy/model/legacy.php b/libraries/legacy/model/legacy.php
index 2a80bdaaff2ab..6ea88babe9b2c 100644
--- a/libraries/legacy/model/legacy.php
+++ b/libraries/legacy/model/legacy.php
@@ -321,6 +321,8 @@ protected function _getListCount($query)
 		if ($query instanceof JDatabaseQuery
 			&& $query->type == 'select'
 			&& $query->group === null
+			&& $query->union === null
+			&& $query->unionAll === null
 			&& $query->having === null)
 		{
 			$query = clone $query;