diff --git a/app/Classes/File/Send/Dynamic.php b/app/Classes/File/Send/Dynamic.php
index 9efcf90..e3e8a86 100644
--- a/app/Classes/File/Send/Dynamic.php
+++ b/app/Classes/File/Send/Dynamic.php
@@ -46,6 +46,9 @@ final class Dynamic extends Send
 			case 'mtime':
 				return $this->sent->timestamp;
 
+			case 'size':
+				return $this->{$key};
+
 			default:
 				return NULL;
 		}