diff --git a/sites/all/modules/contrib-dev/util/contribs/dblog_ext/dblog_filters/dblog_user_filter.module b/sites/all/modules/contrib-dev/util/contribs/dblog_ext/dblog_filters/dblog_user_filter.module
--- contribs/dblog_ext/dblog_filters/dblog_user_filter.module
+++ contribs/dblog_ext/dblog_filters/dblog_user_filter.module
@@ -26,7 +26,7 @@
   $use_realname = module_exists('realname');
   $result = db_query("SELECT DISTINCT(w.uid) AS x, u.* FROM {watchdog} w INNER JOIN {users} u ON u.uid = w.uid");
   while ($row = db_fetch_object($result)) {
-    $user_list[$row->name] = $use_realname ? theme('username', $row, array('plain' => TRUE)) : $row->name;
+    $user_list[$row->name] = ($row->uid == 0 || $use_realname) ? theme('username', $row, array('plain' => TRUE)) : $row->name;
   }
   
   $filters['username'] = array(