diff --git a/appinfo/app.php b/appinfo/app.php
index 4dc70a9f..705d65ba 100644
--- a/appinfo/app.php
+++ b/appinfo/app.php
@@ -25,10 +25,13 @@ OCP\App::addNavigationEntry( array(
   'name' => OC_L10N::get('contacts')->t('Contacts') ));
 
 OCP\Util::addscript('contacts', 'loader');
-OC_Search::registerProvider('OCA\Contacts\SearchProvider');
-OCP\Share::registerBackend('contact', 'OCA\Contacts\Share_Backend_Contact');
-OCP\Share::registerBackend('addressbook', 'OCA\Contacts\Share_Backend_Addressbook', 'contact');
 
-foreach(OCA\Contacts\Addressbook::all(OCP\USER::getUser()) as $addressbook)  {
-	OCP\Contacts::registerAddressBook(new OCA\Contacts\AddressbookProvider($addressbook['id']));
+if(OCP\User::isLoggedIn()) {
+	OC_Search::registerProvider('OCA\Contacts\SearchProvider');
+	OCP\Share::registerBackend('contact', 'OCA\Contacts\Share_Backend_Contact');
+	OCP\Share::registerBackend('addressbook', 'OCA\Contacts\Share_Backend_Addressbook', 'contact');
+
+	foreach(OCA\Contacts\Addressbook::all(OCP\USER::getUser()) as $addressbook)  {
+		OCP\Contacts::registerAddressBook(new OCA\Contacts\AddressbookProvider($addressbook['id']));
+	}
 }