diff --git a/htdocs/install/mysql/migration/15.0.0-16.0.0.sql b/htdocs/install/mysql/migration/15.0.0-16.0.0.sql
index d35797c3750..286d28ac1a6 100644
--- a/htdocs/install/mysql/migration/15.0.0-16.0.0.sql
+++ b/htdocs/install/mysql/migration/15.0.0-16.0.0.sql
@@ -150,6 +150,8 @@ ALTER TABLE llx_facture ADD INDEX idx_facture_datef (datef);
 
 ALTER TABLE llx_projet_task_time ADD COLUMN fk_product integer NULL;
 
+ALTER TABLE llx_c_action_trigger MODIFY elementtype VARCHAR(64);
+
 INSERT INTO llx_c_action_trigger (code,label,description,elementtype,rang) values ('PROPAL_MODIFY','Customer proposal modified','Executed when a customer proposal is modified','propal',2);
 INSERT INTO llx_c_action_trigger (code,label,description,elementtype,rang) values ('ORDER_MODIFY','Customer order modified','Executed when a customer order is set modified','commande',5);
 INSERT INTO llx_c_action_trigger (code,label,description,elementtype,rang) values ('BILL_MODIFY','Customer invoice modified','Executed when a customer invoice is modified','facture',7);
diff --git a/htdocs/install/mysql/migration/16.0.0-17.0.0.sql b/htdocs/install/mysql/migration/16.0.0-17.0.0.sql
deleted file mode 100644
index dad3712d3f3..00000000000
--- a/htdocs/install/mysql/migration/16.0.0-17.0.0.sql
+++ /dev/null
@@ -1,45 +0,0 @@
---
--- Be carefull to requests order.
--- This file must be loaded by calling /install/index.php page
--- when current version is 16.0.0 or higher.
---
--- To restrict request to Mysql version x.y minimum use -- VMYSQLx.y
--- To restrict request to Pgsql version x.y minimum use -- VPGSQLx.y
--- To rename a table:       ALTER TABLE llx_table RENAME TO llx_table_new;
--- To add a column:         ALTER TABLE llx_table ADD COLUMN newcol varchar(60) NOT NULL DEFAULT '0' AFTER existingcol;
--- To rename a column:      ALTER TABLE llx_table CHANGE COLUMN oldname newname varchar(60);
--- To drop a column:        ALTER TABLE llx_table DROP COLUMN oldname;
--- To change type of field: ALTER TABLE llx_table MODIFY COLUMN name varchar(60);
--- To drop a foreign key:   ALTER TABLE llx_table DROP FOREIGN KEY fk_name;
--- To create a unique index ALTER TABLE llx_table ADD UNIQUE INDEX uk_table_field (field);
--- To drop an index:        -- VMYSQL4.1 DROP INDEX nomindex on llx_table;
--- To drop an index:        -- VPGSQL8.2 DROP INDEX nomindex;
--- To make pk to be auto increment (mysql):
--- -- VMYSQL4.3 ALTER TABLE llx_table ADD PRIMARY KEY(rowid);
--- -- VMYSQL4.3 ALTER TABLE llx_table CHANGE COLUMN rowid rowid INTEGER NOT NULL AUTO_INCREMENT;
--- To make pk to be auto increment (postgres):
--- -- VPGSQL8.2 CREATE SEQUENCE llx_table_rowid_seq OWNED BY llx_table.rowid;
--- -- VPGSQL8.2 ALTER TABLE llx_table ADD PRIMARY KEY (rowid);
--- -- VPGSQL8.2 ALTER TABLE llx_table ALTER COLUMN rowid SET DEFAULT nextval('llx_table_rowid_seq');
--- -- VPGSQL8.2 SELECT setval('llx_table_rowid_seq', MAX(rowid)) FROM llx_table;
--- To set a field as NULL:                     -- VMYSQL4.3 ALTER TABLE llx_table MODIFY COLUMN name varchar(60) NULL;
--- To set a field as NULL:                     -- VPGSQL8.2 ALTER TABLE llx_table ALTER COLUMN name DROP NOT NULL;
--- To set a field as NOT NULL:                 -- VMYSQL4.3 ALTER TABLE llx_table MODIFY COLUMN name varchar(60) NOT NULL;
--- To set a field as NOT NULL:                 -- VPGSQL8.2 ALTER TABLE llx_table ALTER COLUMN name SET NOT NULL;
--- To set a field as default NULL:             -- VPGSQL8.2 ALTER TABLE llx_table ALTER COLUMN name SET DEFAULT NULL;
--- Note: fields with type BLOB/TEXT can't have default value.
--- To rebuild sequence for postgresql after insert by forcing id autoincrement fields:
--- -- VPGSQL8.2 SELECT dol_util_rebuild_sequences();
-
-
-
--- Missing in v16 or lower
-
-
-
-
--- v17
-
-ALTER TABLE llx_facture ADD COLUMN close_missing_amount double(24, 8) after close_code;
-
-ALTER TABLE llx_facture_fourn ADD COLUMN close_missing_amount double(24, 8) after close_code;