diff --git a/util/db-mysql.sql b/util/db-mysql.sql
index 9482b82..7f35211 100644
--- a/util/db-mysql.sql
+++ b/util/db-mysql.sql
@@ -240,8 +240,8 @@
 create table if not exists `remote` (
    `remotedomain` char(64) not null primary key,
    `remotehost` char(64) not null,
-   `basedn` char(64) not null,
-   `binddn` char(64) not null,
+   `basedn` char(255) not null,
+   `binddn` char(255) not null,
    `sitedescription` char(64) default null
 ) ENGINE=InnoDB;
 
diff --git a/util/db-upgrade-0.19-vs-0.20.sql b/util/db-upgrade-0.19-vs-0.20.sql
index d197d42..6883c58 100644
--- a/util/db-upgrade-0.19-vs-0.20.sql
+++ b/util/db-upgrade-0.19-vs-0.20.sql
@@ -1,2 +1,4 @@
 alter table `user` change column `password` `password` char(128) default null;
+alter table `remote` change column `basedn` `basedn` char(255) not null;
+alter table `remote` change column `binddn` `binddn` char(255) not null;