diff --git a/src/Engine/Protocols/SocketIO.php b/src/Engine/Protocols/SocketIO.php
index 97ce131..054b0c5 100644
--- a/src/Engine/Protocols/SocketIO.php
+++ b/src/Engine/Protocols/SocketIO.php
@@ -15,7 +15,7 @@ public static function input($http_buffer, $connection)
         $pos = strpos($http_buffer, "\r\n\r\n"); 
         if(!$pos)
         {
-            if(strlen($http_buffer)>=TcpConnection::$maxPackageSize)
+            if(strlen($http_buffer) >= $connection->maxPackageSize)
             {
                 $connection->close("HTTP/1.1 400 bad request\r\n\r\nheader too long");
                 return 0;