diff --git a/htdocs/install/mysql/tables/llx_partnership.key.sql b/htdocs/install/mysql/tables/llx_partnership.key.sql
index 7d09cdddda8..1a2cf6af5bb 100644
--- a/htdocs/install/mysql/tables/llx_partnership.key.sql
+++ b/htdocs/install/mysql/tables/llx_partnership.key.sql
@@ -19,3 +19,6 @@
 
 ALTER TABLE llx_partnership ADD INDEX idx_partnership_entity (entity);
 ALTER TABLE llx_partnership ADD UNIQUE INDEX uk_partnership_ref (ref, entity);
+
+ALTER TABLE llx_partnership ADD UNIQUE INDEX uk_fk_type_fk_soc (fk_type, fk_soc, date_partnership_start);
+ALTER TABLE llx_partnership ADD UNIQUE INDEX uk_fk_type_fk_member (fk_type, fk_member, date_partnership_start);