diff --git a/plugins/owncloud/owncloud.php b/plugins/owncloud/owncloud.php
index 47991584..d847cc3d 100644
--- a/plugins/owncloud/owncloud.php
+++ b/plugins/owncloud/owncloud.php
@@ -24,7 +24,7 @@ class owncloud extends rcube_plugin
         $rcmail = rcmail::get_instance();
 
         // requires kolab_auth plugin
-        if (0&&empty($_SESSION['kolab_uid'])) {
+        if (empty($_SESSION['kolab_uid'])) {
             return;
         }