diff --git a/src/SearchEndpoint/QueryEndpoint.php b/src/SearchEndpoint/QueryEndpoint.php
index eef6822622543a090f7bc114a9eb9d45fb8da572..5c309c9d627a7900710c424df6f3f5b12c3fb719 100644
--- a/src/SearchEndpoint/QueryEndpoint.php
+++ b/src/SearchEndpoint/QueryEndpoint.php
@@ -76,7 +76,7 @@ class QueryEndpoint extends AbstractSearchEndpoint implements OrderedNormalizerI
             $this->bool = $this->getBoolInstance();
         }
 
-        $this->bool->add($builder, $boolType, $key);
+        return $this->bool->add($builder, $boolType, $key);
     }
 
     /**