diff --git a/src/CoreParser.php b/src/CoreParser.php
index 6675bca..f5fe732 100644
--- a/src/CoreParser.php
+++ b/src/CoreParser.php
@@ -104,7 +104,7 @@ class CoreParser {
         $m->code = ord($payload[0]);
         $m->pub_key = base64_encode(substr($payload, 1, CoreProtocol::PUB_KEY_SIZE));
  
-        if( strlen($payload) > CoreProtocol::PUB_KEY_SIZE ) {
+        if( strlen($payload) > CoreProtocol::PUB_KEY_SIZE + 2 ) {
             $m->type = ord($payload[33]);
             $m->flags = ord($payload[34]);
             $m->out_path = substr($payload, 35, CoreProtocol::MAX_PATH_SIZE);