diff --git a/lib/Alchemy/Phrasea/SearchEngine/Elastic/AST/KeyValue/RangeExpression.php b/lib/Alchemy/Phrasea/SearchEngine/Elastic/AST/KeyValue/RangeExpression.php
index af6951a2ab..88d01f92a9 100644
--- a/lib/Alchemy/Phrasea/SearchEngine/Elastic/AST/KeyValue/RangeExpression.php
+++ b/lib/Alchemy/Phrasea/SearchEngine/Elastic/AST/KeyValue/RangeExpression.php
@@ -9,6 +9,7 @@ use Alchemy\Phrasea\SearchEngine\Elastic\AST\Node;
 use Alchemy\Phrasea\SearchEngine\Elastic\Exception\QueryException;
 use Alchemy\Phrasea\SearchEngine\Elastic\Search\QueryContext;
 use Alchemy\Phrasea\SearchEngine\Elastic\Search\QueryHelper;
+use Alchemy\Phrasea\SearchEngine\Elastic\Search\QueryPostProcessor;
 
 class RangeExpression extends Node
 {