diff --git a/install/gnuboard4s.sql b/install/gnuboard4s.sql
index 921665d7f..3b24e1ebc 100644
--- a/install/gnuboard4s.sql
+++ b/install/gnuboard4s.sql
@@ -96,7 +96,7 @@ CREATE TABLE IF NOT EXISTS `g4s_board` (
   `bo_notice` text NOT NULL,
   `bo_upload_count` tinyint(4) NOT NULL default '0',
   `bo_use_email` tinyint(4) NOT NULL default '0',
-  `bo_use_cert` enum('','cert','adult') NOT NULL DEFAULT 'none',
+  `bo_use_cert` enum('','cert','adult') NOT NULL DEFAULT '',
   `bo_sort_field` varchar(255) NOT NULL default '',
   `bo_1_subj` varchar(255) NOT NULL default '',
   `bo_2_subj` varchar(255) NOT NULL default '',