diff --git a/src/Signature/SignatureV4.php b/src/Signature/SignatureV4.php
index d13f9c3afc..e0e4297329 100644
--- a/src/Signature/SignatureV4.php
+++ b/src/Signature/SignatureV4.php
@@ -348,6 +348,11 @@ private function getCanonicalizedQuery(array $query)
         $qs = '';
         ksort($query);
         foreach ($query as $k => $v) {
+            if(is_numeric($k)){
+                $qs .= rawurlencode((string)$v) . '=&';
+                continue;
+            }
+
             if (!is_array($v)) {
                 $qs .= rawurlencode($k) . '=' . rawurlencode($v !== null ? $v : '') . '&';
             } else {