diff --git a/inc/HTTPClient.php b/inc/HTTPClient.php
index 0d7b80cf801082047048e657baab06ae646a87ef..224b329827a7f1beb0e2d70dbd85025dabc21c6a 100644
--- a/inc/HTTPClient.php
+++ b/inc/HTTPClient.php
@@ -808,8 +808,15 @@ class HTTPClient {
     function _postEncode($data){
         $url = '';
         foreach($data as $key => $val){
-            if($url) $url .= '&';
-            $url .= urlencode($key).'='.urlencode($val);
+            if (is_array($val)) {
+                foreach ($val as $k => $v) {
+                    if($url) $url .= '&';
+                    $url .= urlencode($key).'['.$k.']='.urlencode($v);
+                }
+            } else {
+                if($url) $url .= '&';
+                $url .= urlencode($key).'='.urlencode($val);
+            }
         }
         return $url;
     }