--- ../../../all2/modules/sms_simplegateway/sms_simplegateway.module	2016-06-13 09:18:16.743610405 +0200
+++ sms_simplegateway.module	2016-06-16 10:41:33.861631082 +0200
@@ -214,7 +214,7 @@
 
   switch ($config['sms_simplegateway_method']) {
     case 'GET':
-      $http_result = drupal_http_request($config['sms_simplegateway_base_url'] . $query_string);
+      $http_result = drupal_http_request($config['sms_simplegateway_base_url'] . '?' . $query_string);
       break;
     case 'POST':
       $http_result = drupal_http_request($config['sms_simplegateway_base_url'], array(