diff --git a/src/Protocol/Email.php b/src/Protocol/Email.php
index 8acef9c388..77e92616cc 100644
--- a/src/Protocol/Email.php
+++ b/src/Protocol/Email.php
@@ -5,7 +5,6 @@
 namespace Friendica\Protocol;
 
 require_once 'include/html2plain.php';
-require_once 'include/quoteconvert.php';
 
 /**
  * @brief Email class