diff --git a/lib/Alchemy/Phrasea/SearchEngine/Elastic/Search/QueryVisitor.php b/lib/Alchemy/Phrasea/SearchEngine/Elastic/Search/QueryVisitor.php
index 36815ac3ec..9c5f77f9f6 100644
--- a/lib/Alchemy/Phrasea/SearchEngine/Elastic/Search/QueryVisitor.php
+++ b/lib/Alchemy/Phrasea/SearchEngine/Elastic/Search/QueryVisitor.php
@@ -4,6 +4,7 @@ namespace Alchemy\Phrasea\SearchEngine\Elastic\Search;
 
 use Alchemy\Phrasea\SearchEngine\Elastic\AST;
 use Alchemy\Phrasea\SearchEngine\Elastic\Exception\Exception;
+use Alchemy\Phrasea\SearchEngine\Elastic\Mapping;
 use Alchemy\Phrasea\SearchEngine\Elastic\Structure\Structure;
 use Hoa\Compiler\Llk\TreeNode;
 use Hoa\Visitor\Element;
@@ -207,7 +208,7 @@ class QueryVisitor implements Visit
         if ($key instanceof AST\KeyValue\TimestampKey) {
             return true;
         } elseif ($key instanceof AST\KeyValue\FieldKey) {
-            return $this->structure->get($key->getName()) !== null;
+            return $this->structure->typeOf($key->getName()) === Mapping::TYPE_DATE;
         }
         return false;
     }