diff --git a/src/include/common.php b/src/include/common.php
index 44e576b..de00df9 100644
--- a/src/include/common.php
+++ b/src/include/common.php
@@ -2607,6 +2607,10 @@ function disp_user_string($database, $owner_id, $link = TRUE) {
     }
   }
 
+  if ($user_data === FALSE) {
+    return FALSE;
+  }
+
   if ($owner_id == $po_user['id']) {
     $str = $strings['users_my_folders'];
   } else {