diff --git a/classes/Markdown.php b/classes/Markdown.php
index 16aafb9..3b9c3a5 100644
--- a/classes/Markdown.php
+++ b/classes/Markdown.php
@@ -68,7 +68,7 @@ class Markdown
static private function replaceUrls($string)
{
$pr = '((https{0,1}:\/\/[\da-z\.-]+\.[a-z]{2,6})([\/\w\?=%+,-]|(\.[^\s]))*\/?)';
- $rep = '$1';
+ $rep = '$0';
return preg_replace($pr, $rep, $string);
}