diff --git a/app/Services/Markdown/Formatter.php b/app/Services/Markdown/Formatter.php
index 5b75689..415da41 100644
--- a/app/Services/Markdown/Formatter.php
+++ b/app/Services/Markdown/Formatter.php
@@ -43,6 +43,10 @@ public function __construct(protected string $source)
      */
     public function render(): string
     {
+        if (empty($this->source)) {
+            return $this->source;
+        }
+
         $hash     = md5($this->source);
         $cacheKey = sprintf('markdown_formatted_%s', $hash);