diff --git a/src/Db/Query/Where/WhereBrackets.php b/src/Db/Query/Where/WhereBrackets.php
index 544e0bea3..30d1f37bd 100644
--- a/src/Db/Query/Where/WhereBrackets.php
+++ b/src/Db/Query/Where/WhereBrackets.php
@@ -8,6 +8,7 @@
 use Imi\Db\Query\Interfaces\IBaseWhere;
 use Imi\Db\Query\Interfaces\IQuery;
 use Imi\Db\Query\Interfaces\IWhereBrackets;
+use Imi\Db\Query\Interfaces\IWhereCollector;
 use Imi\Db\Query\Traits\TRaw;
 use Imi\Db\Query\WhereCollector;
 
@@ -97,7 +98,7 @@ public function toStringWithoutLogic(IQuery $query): string
 
             return '(' . $result . ')';
         }
-        elseif (null === $callResult)
+        elseif (null === $callResult || $callResult instanceof IWhereCollector)
         {
             $result = '(';
             foreach ([