diff --git a/lib/Elastica/Query.php b/lib/Elastica/Query.php
index 47134288ef..594c8cd645 100644
--- a/lib/Elastica/Query.php
+++ b/lib/Elastica/Query.php
@@ -407,7 +407,7 @@ public function setSuggest(Suggest $suggest)
     public function setRescore($rescore)
     {
         if (is_array($rescore)) {
-            $buffer = [];
+            $buffer = array();
 
             foreach($rescore as $rescoreQuery) {
                 $buffer []= $rescoreQuery->toArray();