diff --git a/db/update3.0.beta1.sql b/db/update3.0.beta1.sql
index 464cdb337f..636259a08f 100644
--- a/db/update3.0.beta1.sql
+++ b/db/update3.0.beta1.sql
@@ -1,2 +1,3 @@
 UPDATE `zt_story` SET `source` = 'customer' WHERE `source` = 'custom';
 ALTER TABLE `zt_action` CHANGE `product` `product` VARCHAR( 255 ) NOT NULL ;
+ALTER TABLE `zt_history` CHANGE `diff` `diff` MEDIUMTEXT CHARACTER SET utf8 COLLATE utf8_general_ci NOT NULL ;