diff --git a/src/SMS.php b/src/SMS.php
index 2f511d5..9473fef 100644
--- a/src/SMS.php
+++ b/src/SMS.php
@@ -117,6 +117,7 @@ private function makeRequest($method, $url, $params)
         ];
         
         if ($method === 'GET') {
+            $options[RequestOptions::QUERY] = $params;
             $response = $client->get($url, $options);
         } else {
             $options[RequestOptions::FORM_PARAMS] = $params;