diff --git a/mergers/recursive_extend.py b/mergers/recursive_extend.py
new file mode 100644
index 0000000..f8487af
--- /dev/null
+++ b/mergers/recursive_extend.py
@@ -0,0 +1,14 @@
+#
+# -*- coding: utf-8 -*-
+#
+# This file is part of reclass (http://github.com/madduck/reclass)
+#
+# Copyright © 2007–13 martin f. krafft <madduck@madduck.net>
+# Released under the terms of the Artistic Licence 2.0
+#
+from base import BaseMerger
+
+class RecursiveExtend(BaseMerger):
+
+    def merge(self, first, second):
+        for