diff --git a/htdocs/install/mysql/tables/llx_product.key.sql b/htdocs/install/mysql/tables/llx_product.key.sql
index d339f2082ee..bd48aa99cd4 100644
--- a/htdocs/install/mysql/tables/llx_product.key.sql
+++ b/htdocs/install/mysql/tables/llx_product.key.sql
@@ -30,6 +30,7 @@ ALTER TABLE llx_product ADD INDEX idx_product_seuil_stock_alerte (seuil_stock_al
 ALTER TABLE llx_product ADD INDEX idx_product_fk_country (fk_country);
 ALTER TABLE llx_product ADD INDEX idx_product_fk_user_author (fk_user_author);
 ALTER TABLE llx_product ADD INDEX idx_product_fk_barcode_type (fk_barcode_type);
+ALTER TABLE llx_product ADD INDEX idx_product_fk_project (fk_project);
 ALTER TABLE llx_product ADD UNIQUE INDEX uk_product_barcode (barcode, fk_barcode_type, entity);
 ALTER TABLE llx_product ADD CONSTRAINT fk_product_fk_unit FOREIGN KEY (fk_unit) REFERENCES llx_c_units (rowid);