diff --git a/lib/ztcloud/ztcloud.class.php b/lib/ztcloud/ztcloud.class.php
index 723f204784..40f3453ab0 100644
--- a/lib/ztcloud/ztcloud.class.php
+++ b/lib/ztcloud/ztcloud.class.php
@@ -176,6 +176,7 @@ class ztcloud
     public function clearAllRecipients()
     {
         $this->toList = '';
+        $this->ccList = '';
     }
 
     /**