diff --git a/src/Illuminate/Queue/Queue.php b/src/Illuminate/Queue/Queue.php
index 0ce7ad1ac1ce..4f36b80db75b 100755
--- a/src/Illuminate/Queue/Queue.php
+++ b/src/Illuminate/Queue/Queue.php
@@ -107,7 +107,7 @@ protected function createPayload($job, $queue, $data = '')
 
         if (json_last_error() !== JSON_ERROR_NONE) {
             throw new InvalidPayloadException(
-                'Unable to JSON encode payload. Error code: '.json_last_error(), $value
+                'Unable to JSON encode payload. Error ('.json_last_error().'): '.json_last_error_msg(), $value
             );
         }