diff --git a/htdocs/install/mysql/migration/13.0.0-14.0.0.sql b/htdocs/install/mysql/migration/13.0.0-14.0.0.sql
index 08b4bbbc903..e42fd398bcf 100644
--- a/htdocs/install/mysql/migration/13.0.0-14.0.0.sql
+++ b/htdocs/install/mysql/migration/13.0.0-14.0.0.sql
@@ -126,13 +126,27 @@ ALTER TABLE llx_chargesociales ADD COLUMN fk_user integer DEFAULT NULL;
 RENAME TABLE llx_payment_salary TO llx_salary;
 RENAME TABLE llx_payment_salary_extrafields TO llx_salary_extrafields;
 
-ALTER TABLE llx_salary RENAME INDEX idx_payment_salary_ref TO idx_salary_ref;
-ALTER TABLE llx_salary RENAME INDEX idx_payment_salary_user TO idx_salary_user;
-ALTER TABLE llx_salary RENAME INDEX idx_payment_salary_datep TO idx_salary_datep;
-ALTER TABLE llx_salary RENAME INDEX idx_payment_salary_datesp TO idx_salary_datesp;
-ALTER TABLE llx_salary RENAME INDEX idx_payment_salary_dateep TO idx_salary_dateep;
-ALTER TABLE llx_salary DROP CONSTRAINT fk_payment_salary_user, ADD CONSTRAINT fk_salary_user FOREIGN KEY (fk_user) REFERENCES llx_user (rowid);
-ALTER TABLE llx_salary_extrafields RENAME INDEX idx_payment_salary_extrafields TO idx_salary_extrafields;
+-- Rename indexes
+ALTER TABLE llx_salary DROP INDEX idx_payment_salary_ref;
+ALTER TABLE llx_salary ADD INDEX idx_salary_ref (num_payment);
+
+ALTER TABLE llx_salary DROP INDEX idx_payment_salary_user;
+ALTER TABLE llx_salary ADD INDEX idx_salary_user (fk_user, entity);
+
+ALTER TABLE llx_salary DROP INDEX idx_payment_salary_datep;
+ALTER TABLE llx_salary ADD INDEX idx_salary_datep (datep);
+
+ALTER TABLE llx_salary DROP INDEX idx_payment_salary_datesp;
+ALTER TABLE llx_salary ADD INDEX idx_salary_datesp (datesp);
+
+ALTER TABLE llx_salary DROP INDEX idx_payment_salary_dateep;
+ALTER TABLE llx_salary ADD INDEX idx_salary_dateep (dateep);
+
+--ALTER TABLE llx_salary ADD CONSTRAINT fk_salary_user FOREIGN KEY (fk_user) REFERENCES llx_user (rowid);
+--ALTER TABLE llx_salary DROP INDEX fk_payment_salary_user;
+
+ALTER TABLE llx_salary_extrafields DROP INDEX idx_payment_salary_extrafields;
+ALTER TABLE llx_salary_extrafields ADD INDEX idx_salary_extrafields (fk_object);
 
 ALTER TABLE llx_salary ADD paye smallint default 1 NOT NULL;
 ALTER TABLE llx_salary ADD fk_account integer;