diff --git a/src/lib/Server/Input/Parser/FilterParser.php b/src/lib/Server/Input/Parser/FilterParser.php
index 663dbff9..748aa5b2 100644
--- a/src/lib/Server/Input/Parser/FilterParser.php
+++ b/src/lib/Server/Input/Parser/FilterParser.php
@@ -31,7 +31,11 @@ public function parse(array $data, ParsingDispatcher $parsingDispatcher): Filter
     {
         $filter = new Filter();
         if (array_key_exists('criteria', $data) && is_array($data['criteria'])) {
-            $filter->andWithCriterion($this->processCriteriaArray($data['criteria'], $parsingDispatcher));
+            $criteria = $this->processCriteriaArray($data['criteria'], $parsingDispatcher);
+
+            if ($criteria !== null) {
+                $filter->andWithCriterion($criteria);
+            }
         }
 
         // limit