diff --git a/htdocs/install/mysql/migration/11.0.0-12.0.0.sql b/htdocs/install/mysql/migration/11.0.0-12.0.0.sql
index 0d0a3a23fae..4c1b45fb2d2 100644
--- a/htdocs/install/mysql/migration/11.0.0-12.0.0.sql
+++ b/htdocs/install/mysql/migration/11.0.0-12.0.0.sql
@@ -203,5 +203,6 @@ ALTER TABLE llx_categorie MODIFY type integer NOT NULL DEFAULT 1;
 
 ALTER TABLE llx_societe_remise_except ADD COLUMN vat_src_code varchar(10) DEFAULT '';
 
+ALTER TABLE llx_blockedlog MODIFY COLUMN object_data mediumtext;
 ALTER TABLE llx_blockedlog ADD COLUMN object_version varchar(32) DEFAULT '';
 
diff --git a/htdocs/install/mysql/tables/llx_blockedlog.sql b/htdocs/install/mysql/tables/llx_blockedlog.sql
index 09adfaf15d1..80a4c150150 100644
--- a/htdocs/install/mysql/tables/llx_blockedlog.sql
+++ b/htdocs/install/mysql/tables/llx_blockedlog.sql
@@ -32,7 +32,7 @@ CREATE TABLE llx_blockedlog
 	date_object	datetime,
 	signature varchar(100) NOT NULL, 
 	signature_line varchar(100) NOT NULL, 
-	object_data	text,
+	object_data	mediumtext,
 	object_version varchar(32) DEFAULT '';
 	certified integer
 ) ENGINE=innodb;