diff --git a/htdocs/install/mysql/migration/3.2.0-3.3.0.sql b/htdocs/install/mysql/migration/3.2.0-3.3.0.sql
index e48e81b2051..7c594ef77af 100755
--- a/htdocs/install/mysql/migration/3.2.0-3.3.0.sql
+++ b/htdocs/install/mysql/migration/3.2.0-3.3.0.sql
@@ -813,7 +813,7 @@ CREATE TABLE llx_product_price_by_qty
   qty_min		real DEFAULT 0
 )ENGINE=innodb;
 
-ALTER TABLE llx_product_price ADD price_by_qty INT NOT NULL DEFAULT 0;
+ALTER TABLE llx_product_price ADD COLUMN price_by_qty INT NOT NULL DEFAULT 0;
 
 ALTER TABLE llx_product_price_by_qty ADD UNIQUE INDEX uk_product_price_by_qty_level (fk_product_price, qty_min);
 
@@ -880,3 +880,8 @@ create table llx_user_extrafields
 )ENGINE=innodb;
 
 ALTER TABLE llx_user_extrafields ADD INDEX idx_user_extrafields (fk_object);
+
+ALTER TABLE llx_element_lock ADD COLUMN sessionid varchar(255) AFTER datem;
+ALTER TABLE llx_element_lock MODIFY COLUMN elementtype varchar(32) NOT NULL;
+ALTER TABLE llx_element_lock DROP COLUMN fk_user_modif;
+ALTER TABLE llx_element_lock DROP COLUMN status;
diff --git a/htdocs/install/mysql/tables/llx_element_lock.sql b/htdocs/install/mysql/tables/llx_element_lock.sql
index ac4e18d6a1a..fd51f1f2118 100644
--- a/htdocs/install/mysql/tables/llx_element_lock.sql
+++ b/htdocs/install/mysql/tables/llx_element_lock.sql
@@ -20,10 +20,8 @@ create table llx_element_lock
 (
 	rowid				integer	AUTO_INCREMENT	PRIMARY KEY,
 	fk_element			integer NOT NULL,
-	elementtype			varchar(16) NOT NULL,
+	elementtype			varchar(32) NOT NULL,
 	datel    			datetime,				-- date of lock
 	datem    			datetime,				-- date of unlock/modif
-	fk_user_modif   	integer,
-	status				tinyint DEFAULT 0		-- 0 unlock, 1 lock
-	
+	sessionid			varchar(255)	
 )ENGINE=innodb;