diff --git a/pisi/replace.py b/pisi/replace.py
new file mode 100644
index 00000000..9817effd
--- /dev/null
+++ b/pisi/replace.py
@@ -0,0 +1,27 @@
+# -*- coding: utf-8 -*-
+#
+# Copyright (C) 2005 - 2007, TUBITAK/UEKAE
+#
+# This program is free software; you can redistribute it and/or modify it under
+# the terms of the GNU General Public License as published by the Free
+# Software Foundation; either version 2 of the License, or (at your option)
+# any later version.
+#
+# Please read the COPYING file.
+#
+
+import gettext
+__trans = gettext.translation('pisi', fallback=True)
+_ = __trans.ugettext
+
+import pisi.relation
+
+""" Replace relation """
+class Replace(pisi.relation.Relation):
+    pass
+
+def installed_package_replaced(repinfo):
+    """determine if an installed package in *repository* replaced with
+given a package"""
+    return pisi.relation.installed_package_satisfies(repinfo)
+