diff --git a/mailcow/src/mailcow-dockerized/data/web/inc/lib/sieve/SieveDumpable.php b/mailcow/src/mailcow-dockerized/data/web/inc/lib/sieve/SieveDumpable.php
new file mode 100644
index 0000000..af82d6a
--- /dev/null
+++ b/mailcow/src/mailcow-dockerized/data/web/inc/lib/sieve/SieveDumpable.php
@@ -0,0 +1,7 @@
+<?php namespace Sieve;
+
+interface SieveDumpable
+{
+	function dump();
+	function text();
+}