diff --git a/Curl.php b/Curl.php
index 8aec8a3..45c93bd 100755
--- a/Curl.php
+++ b/Curl.php
@@ -162,7 +162,7 @@ public function post($url, $data, $params = array(), $debug = false)
 
         $options = $this->getOptions();
         $options[CURLOPT_POST] = true;
-        $options[CURLOPT_POSTFIELDS] = $data;
+        $options[CURLOPT_POSTFIELDS] = is_array($data) ? http_build_query($data) : $data;
 
         return $this->exec($url, $options, $debug);
     }