diff --git a/Markup.php b/Markup.php
index <HASH>..<HASH> 100755
--- a/Markup.php
+++ b/Markup.php
@@ -7,7 +7,7 @@ namespace HtmlGenerator;
 use ArrayAccess;
 
 if (!defined('ENT_XML1')) {
-    define('ENT_XML1', 16);
+	define('ENT_XML1', 16);
 }
 if (!defined('ENT_XHTML')) {
     define('ENT_XHTML', 32);
Add error to test PSR2 validation, should be valid with php7 only