diff --git a/plugins/calendar/drivers/kolab/SQL/mysql.initial.sql b/plugins/calendar/drivers/kolab/SQL/mysql.initial.sql
index d5009616..f672fb74 100644
--- a/plugins/calendar/drivers/kolab/SQL/mysql.initial.sql
+++ b/plugins/calendar/drivers/kolab/SQL/mysql.initial.sql
@@ -1,32 +1,32 @@
 /**
  * Roundcube Calendar Kolab backend
  *
  * @version @package_version@
  * @author Thomas Bruederli
  * @licence GNU AGPL
  **/
 
 CREATE TABLE IF NOT EXISTS `kolab_alarms` (
   `alarm_id` VARCHAR(255) NOT NULL,
   `user_id` int(10) UNSIGNED NOT NULL,
   `notifyat` DATETIME DEFAULT NULL,
   `dismissed` TINYINT(3) UNSIGNED NOT NULL DEFAULT '0',
   PRIMARY KEY(`alarm_id`,`user_id`),
   CONSTRAINT `fk_kolab_alarms_user_id` FOREIGN KEY (`user_id`)
     REFERENCES `users`(`user_id`) ON DELETE CASCADE ON UPDATE CASCADE
-) /*!40000 ENGINE=INNODB */;
+) /*!40000 ENGINE=INNODB */ /*!40101 CHARACTER SET utf8 COLLATE utf8_general_ci */;
 
 CREATE TABLE IF NOT EXISTS `itipinvitations` (
   `token` VARCHAR(64) NOT NULL,
   `event_uid` VARCHAR(255) NOT NULL,
   `user_id` int(10) UNSIGNED NOT NULL DEFAULT '0',
   `event` TEXT NOT NULL,
   `expires` DATETIME DEFAULT NULL,
   `cancelled` TINYINT(3) UNSIGNED NOT NULL DEFAULT '0',
   PRIMARY KEY(`token`),
   INDEX `uid_idx` (`event_uid`,`user_id`),
   CONSTRAINT `fk_itipinvitations_user_id` FOREIGN KEY (`user_id`)
     REFERENCES `users`(`user_id`) ON DELETE CASCADE ON UPDATE CASCADE
 ) /*!40000 ENGINE=INNODB */ /*!40101 CHARACTER SET utf8 COLLATE utf8_general_ci */;
 
 REPLACE INTO system (name, value) VALUES ('calendar-kolab-version', '2014041700');
diff --git a/plugins/calendar/drivers/kolab/SQL/mysql/2012080600.sql b/plugins/calendar/drivers/kolab/SQL/mysql/2012080600.sql
index 5c9f1aec..71ddfe7f 100644
--- a/plugins/calendar/drivers/kolab/SQL/mysql/2012080600.sql
+++ b/plugins/calendar/drivers/kolab/SQL/mysql/2012080600.sql
@@ -1,11 +1,11 @@
 DROP TABLE IF EXISTS `kolab_alarms`;
 
 CREATE TABLE `kolab_alarms` (
   `event_id` VARCHAR(255) NOT NULL,
   `user_id` int(10) UNSIGNED NOT NULL,
   `notifyat` DATETIME DEFAULT NULL,
   `dismissed` TINYINT(3) UNSIGNED NOT NULL DEFAULT '0',
   PRIMARY KEY(`event_id`),
   CONSTRAINT `fk_kolab_alarms_user_id` FOREIGN KEY (`user_id`)
     REFERENCES `users`(`user_id`) ON DELETE CASCADE ON UPDATE CASCADE
-) /*!40000 ENGINE=INNODB */;
+) /*!40000 ENGINE=INNODB */ /*!40101 CHARACTER SET utf8 COLLATE utf8_general_ci */;