diff --git a/inc/config.php b/inc/config.php
index 69e1b7e2..d5cfc6d0 100644
--- a/inc/config.php
+++ b/inc/config.php
@@ -1219,6 +1219,7 @@
     // Error messages
     $config['error']['bot']         = _('You look like a bot.');
     $config['error']['referer']     = _('Your browser sent an invalid or no HTTP referer.');
+    $config['error']['opnohistory'] = _('You must post at least once before creating thread.');
     $config['error']['toolong']     = _('The %s field was too long.');
     $config['error']['toolong_body']    = _('The body was too long.');
     $config['error']['tooshort_body']   = _('The body was too short or empty.');