diff --git a/src/Components/Blocks/Header.php b/src/Components/Blocks/Header.php
index bdae2be..10762dc 100644
--- a/src/Components/Blocks/Header.php
+++ b/src/Components/Blocks/Header.php
@@ -69,6 +69,9 @@ final class Header implements Block
 
         $text = \trim($text, " \t");
 
+        # remove closing sequence
+        $text = \rtrim(\rtrim($text, '#'), " \t");
+
         return new self($text, $level);
     }