1 files changed, 5 insertions, 0 deletions
diff --git a/inc/Subscriptions/SubscriberManager.php b/inc/Subscriptions/SubscriberManager.php
index 138176fe9..ded1390cf 100644
--- a/inc/Subscriptions/SubscriberManager.php
+++ b/inc/Subscriptions/SubscriberManager.php
@@ -124,6 +124,11 @@ class SubscriberManager
             $user = $INPUT->server->str('REMOTE_USER');
         }
 
+        if (empty($user)) {
+            // not logged in
+            return false;
+        }
+
         $subs = $this->subscribers($id, $user);
         if (!count($subs)) {
             return false;