diff --git a/src/Formatter/AbstractFormatter.php b/src/Formatter/AbstractFormatter.php
index 3acc133..b263905 100644
--- a/src/Formatter/AbstractFormatter.php
+++ b/src/Formatter/AbstractFormatter.php
@@ -22,7 +22,7 @@ public function __construct()
 
     public function getHtml(mixed $value): string
     {
-        return $this->getString($value);
+        return $this->escapeHTML($this->getString($value));
     }
 
     /**