diff --git a/htdocs/install/mysql/tables/llx_product_stock.sql b/htdocs/install/mysql/tables/llx_product_stock.sql
index c5a2f4ad005..8132a71cdd3 100644
--- a/htdocs/install/mysql/tables/llx_product_stock.sql
+++ b/htdocs/install/mysql/tables/llx_product_stock.sql
@@ -16,6 +16,7 @@
 -- You should have received a copy of the GNU General Public License
 -- along with this program. If not, see <https://www.gnu.org/licenses/>.
 --
+-- See also its child table llx_product_batch that contains details per lot
 -- ============================================================================
 
 create table llx_product_stock