diff --git a/util/db-mysql.sql b/util/db-mysql.sql
index 8ccfb54..2ded4df 100644
--- a/util/db-mysql.sql
+++ b/util/db-mysql.sql
@@ -46,8 +46,8 @@
   `direction` int default 0,
   `attachments` int default 0,
   `piler_id` char(36) not null,
-  `message_id` char(128) character set 'latin1' not null,
-  `reference` char(64) character set 'latin1' not null,
+  `message_id` char(128) not null,
+  `reference` char(64) not null,
   `digest` char(64) not null,
   `bodydigest` char(64) not null,
   `vcode` char(64) default null,
@@ -115,12 +115,12 @@
 drop table if exists `archiving_rule`;
 create table if not exists `archiving_rule` (
    `id` bigint unsigned not null auto_increment,
-   `from` char(128) character set 'latin1' default null,
-   `to` char(255) character set 'latin1' default null,
-   `subject` char(255) character set 'latin1' default null,
+   `from` char(128) default null,
+   `to` char(255) default null,
+   `subject` char(255) default null,
    `_size` char(2) default null,
    `size` int default 0,
-   `attachment_type` char(128) character set 'latin1' default null,
+   `attachment_type` char(128) default null,
    `_attachment_size` char(2) default null,
    `attachment_size` int default 0,
    `spam` tinyint(1) default -1,
@@ -133,12 +133,12 @@
 drop table if exists `retention_rule`;
 create table if not exists `retention_rule` (
    `id` bigint unsigned not null auto_increment,
-   `from` char(128) character set 'latin1' default null,
-   `to` char(255) character set 'latin1' default null,
-   `subject` char(255) character set 'latin1' default null,
+   `from` char(128) default null,
+   `to` char(255) default null,
+   `subject` char(255) default null,
    `_size` char(2) default null,
    `size` int default 0,
-   `attachment_type` char(128) character set 'latin1' default null,
+   `attachment_type` char(128) default null,
    `_attachment_size` char(2) default null,
    `attachment_size` int default 0,
    `spam` tinyint(1) default -1,