diff --git a/lib/OpenNode.php b/lib/OpenNode.php
index 738e218..43153e6 100644
--- a/lib/OpenNode.php
+++ b/lib/OpenNode.php
@@ -80,7 +80,7 @@ public static function request($url, $method = 'POST', $params = array(), $authe
         $response    = json_decode(curl_exec($curl), TRUE);
         $http_status = curl_getinfo($curl, CURLINFO_HTTP_CODE);
 
-        if (array_key_exists('data', $response)){
+        if (is_array($response) && array_key_exists('data', $response)){
             return $response['data'];
         }
         else {