diff --git a/lib/public/groupinterface.php b/lib/public/groupinterface.php
new file mode 100644
index 0000000000..9783302811
--- /dev/null
+++ b/lib/public/groupinterface.php
@@ -0,0 +1,31 @@
+<?php
+/**
+* ownCloud
+*
+* @author Arthur Schiwon
+* @copyright 2012 Arthur Schiwon blizzz@owncloud.org
+*
+* This library is free software; you can redistribute it and/or
+* modify it under the terms of the GNU AFFERO GENERAL PUBLIC LICENSE
+* License as published by the Free Software Foundation; either
+* version 3 of the License, or any later version.
+*
+* This library is distributed in the hope that it will be useful,
+* but WITHOUT ANY WARRANTY; without even the implied warranty of
+* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+* GNU AFFERO GENERAL PUBLIC LICENSE for more details.
+*
+* You should have received a copy of the GNU Affero General Public
+* License along with this library.  If not, see <http://www.gnu.org/licenses/>.
+*
+*/
+
+/**
+ * Public interface of ownCloud for apps to use.
+ * Group Class.
+ *
+ */
+
+namespace OCP;
+
+interface GroupInterface extends \OC_Group_Interface {}
\ No newline at end of file
diff --git a/lib/public/userinterface.php b/lib/public/userinterface.php
new file mode 100644
index 0000000000..b73a8f8d8b
--- /dev/null
+++ b/lib/public/userinterface.php
@@ -0,0 +1,31 @@
+<?php
+/**
+* ownCloud
+*
+* @author Arthur Schiwon
+* @copyright 2012 Arthur Schiwon blizzz@owncloud.org
+*
+* This library is free software; you can redistribute it and/or
+* modify it under the terms of the GNU AFFERO GENERAL PUBLIC LICENSE
+* License as published by the Free Software Foundation; either
+* version 3 of the License, or any later version.
+*
+* This library is distributed in the hope that it will be useful,
+* but WITHOUT ANY WARRANTY; without even the implied warranty of
+* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+* GNU AFFERO GENERAL PUBLIC LICENSE for more details.
+*
+* You should have received a copy of the GNU Affero General Public
+* License along with this library.  If not, see <http://www.gnu.org/licenses/>.
+*
+*/
+
+/**
+ * Public interface of ownCloud for apps to use.
+ * User Class.
+ *
+ */
+
+namespace OCP;
+
+interface UserInterface extends \OC_User_Interface {}
\ No newline at end of file