diff --git a/src/db/MarkdownText.php b/src/db/MarkdownText.php
index 37ec2d9..d60570f 100644
--- a/src/db/MarkdownText.php
+++ b/src/db/MarkdownText.php
@@ -57,7 +57,7 @@ public function ParseMarkdown($bCache = true, $strValue = '')
             return $this->parsedContent;
         }
 
-        $parsed = !empty($strValue) ? $strValue : $this->value;
+        $parsed = strval(!empty($strValue) ? $strValue : $this->value);
 
         $this->extend('onBeforeParseDown', $parsed);