diff --git a/includes/HttpClient.inc b/includes/HttpClient.inc
index c289199..e3c1fcb 100644
--- a/includes/HttpClient.inc
+++ b/includes/HttpClient.inc
@@ -353,7 +353,7 @@ class HttpClientBaseFormatter implements HttpClientFormatter {
         break;
       case self::FORMAT_JSON:
         $response = drupal_json_decode($data);
-        if ($response === NULL) {
+        if ($response === NULL && json_last_error() != JSON_ERROR_NONE) {
           throw new Exception(t('Unserialization of response body failed.'), 1);
         }
         return $response;