diff --git a/src/includes/markup.parsedown.php b/src/includes/markup.parsedown.php
index 2ad659b..26b8be4 100644
--- a/src/includes/markup.parsedown.php
+++ b/src/includes/markup.parsedown.php
@@ -40,9 +40,6 @@ class MTTParsedown extends Parsedown
 
         $this->InlineTypes['#'][]= 'TaskId';
         $this->inlineMarkerList .= '#';
-
-        // Allow RFC2392 Message-ID URI scheme in links
-        $this->safeLinksWhitelist[] = 'mid:';
     }
 
     public function setToExternal(bool $v)