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-rw-r--r--lib/user/user.php2
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/user/user.php b/lib/user/user.php
index 55d7848a979..8115c43198c 100644
--- a/lib/user/user.php
+++ b/lib/user/user.php
@@ -44,7 +44,7 @@ class User {
*/
public function __construct($uid, $backend, $emitter = null) {
$this->uid = $uid;
- if ($backend->implementsActions(OC_USER_BACKEND_GET_DISPLAYNAME)) {
+ if ($backend and $backend->implementsActions(OC_USER_BACKEND_GET_DISPLAYNAME)) {
$this->displayName = $backend->getDisplayName($uid);
} else {
$this->displayName = $uid;