diff --git a/lib/weblib.php b/lib/weblib.php
index b00818db0e0..b17368fc810 100644
--- a/lib/weblib.php
+++ b/lib/weblib.php
@@ -1695,7 +1695,6 @@ function clean_text($text, $format=FORMAT_MOODLE) {
 
     switch ($format) {
         case FORMAT_PLAIN:
-        case FORMAT_MARKDOWN:
             return $text;
 
         default: