1 files changed, 6 insertions, 1 deletions
diff --git a/src/SemanticScuttle/Service/User.php b/src/SemanticScuttle/Service/User.php
index 917c7c9..675c4fb 100644
--- a/src/SemanticScuttle/Service/User.php
+++ b/src/SemanticScuttle/Service/User.php
@@ -395,7 +395,12 @@ class SemanticScuttle_Service_User extends SemanticScuttle_DbService
     {
         if (is_numeric($user)) {
             $user = $this->getUser($user);
-            $user = $user['username'];
+            if ($user) {
+                $user = $user['username'];
+            }
+            else {
+                $user = 'unknown';
+            }
         } else if (is_array($user)) {
             $user = $user['username'];
         }