diff --git a/sale_order_line_date/models/sale_order_line.py b/sale_order_line_date/models/sale_order_line.py
index 5406b8a0316..01949196ae5 100644
--- a/sale_order_line_date/models/sale_order_line.py
+++ b/sale_order_line_date/models/sale_order_line.py
@@ -31,5 +31,5 @@ def _prepare_procurement_values(self, group_id=False):
         vals = super(SaleOrderLine, self)._prepare_procurement_values(group_id)
         # has ensure_one already
         if self.commitment_date:
-            vals.update({"date_planned": self.commitment_date})
+            vals.update({"date_deadline": self.commitment_date})
         return vals