Wrong version for MySQL check

plugins/check.php

@@ -62,6 +62,6 @@ if ($error=='') echo('Lychee is ready. Lets rock!' . PHP_EOL . PHP_EOL); else ec
 if (ini_get('max_execution_time')<200&&ini_set('upload_max_filesize', '20M')!==true) echo('Warning: You may experience problems when uploading a large amount of photos. Take a look in the FAQ for details.' . PHP_EOL);
 
 // Check mysql version
-if ($database->server_version<50800) echo('Warning: Lychee uses the GBK charset to avoid sql injections on your MySQL version. Please update to MySQL 5.5 or higher to enable UTF-8 support.' . PHP_EOL);
+if ($database->server_version<50500) echo('Warning: Lychee uses the GBK charset to avoid sql injections on your MySQL version. Please update to MySQL 5.5 or higher to enable UTF-8 support.' . PHP_EOL);
 
 ?>