diff --git a/src/Abstract/Model/Gtk/Pango/Markup.php b/src/Abstract/Model/Gtk/Pango/Markup.php
index 7654fe6c..67d11953 100644
--- a/src/Abstract/Model/Gtk/Pango/Markup.php
+++ b/src/Abstract/Model/Gtk/Pango/Markup.php
@@ -148,11 +148,7 @@ class Markup implements \Yggverse\Yoda\Interface\Model\Gtk\Pango\Markup
         );
 
         $layout->set_markup(
-            $markup,
-            mb_strlen(
-                $markup,
-                self::ENCODING
-            )
+            $markup, -1
         );
 
         if ($size = $layout->get_pixel_size())