diff --git a/htdocs/install/mysql/migration/3.8.0-3.9.0.sql b/htdocs/install/mysql/migration/3.8.0-3.9.0.sql
index 13451e55c50..20ec018ad28 100755
--- a/htdocs/install/mysql/migration/3.8.0-3.9.0.sql
+++ b/htdocs/install/mysql/migration/3.8.0-3.9.0.sql
@@ -32,6 +32,8 @@ INSERT INTO llx_const (name, value, type, note, visible) values ('MAIN_SIZE_SHOR
 
 ALTER TABLE llx_accounting_system MODIFY COLUMN pcg_version varchar(32);
 ALTER TABLE llx_accountingaccount MODIFY COLUMN fk_pcg_version varchar(32);
+ALTER TABLE llx_accountingaccount RENAME TO llx_accounting_account;
+ALTER TABLE llx_accounting_account ADD INDEX idx_accounting_account_account_number (account_number);
 
 UPDATE llx_const SET name = __ENCRYPT('ACCOUNTING_EXPORT_PREFIX_SPEC')__ WHERE __DECRYPT('name')__ = 'EXPORT_PREFIX_SPEC';
 
@@ -40,8 +42,6 @@ UPDATE llx_const set value = __ENCRYPT('eldy')__ WHERE __DECRYPT('value')__ = 'b
 UPDATE llx_const set value = __ENCRYPT('eldy')__ WHERE __DECRYPT('value')__ = 'amarok';
 UPDATE llx_const set value = __ENCRYPT('eldy')__ WHERE __DECRYPT('value')__ = 'cameleo';
 
-ALTER TABLE llx_accountingaccount RENAME TO llx_accounting_account;
-
 ALTER TABLE llx_societe ADD COLUMN model_pdf varchar(255);
 
 ALTER TABLE llx_societe_commerciaux ADD COLUMN import_key varchar(14) AFTER fk_user;