diff --git a/addons/mrp/models/stock_move.py b/addons/mrp/models/stock_move.py
index 35920f7a88e..8d504339336 100644
--- a/addons/mrp/models/stock_move.py
+++ b/addons/mrp/models/stock_move.py
@@ -136,8 +136,8 @@ class StockMove(models.Model):
     cost_share = fields.Float(
         "Cost Share (%)", digits=(5, 2),  # decimal = 2 is important for rounding calculations!!
         help="The percentage of the final production cost for this by-product. The total of all by-products' cost share must be smaller or equal to 100.")
-    product_qty_available = fields.Float('Product On Hand Quantity', related='product_id.qty_available')
-    product_virtual_available = fields.Float('Product Forecasted Quantity', related='product_id.virtual_available')
+    product_qty_available = fields.Float('Product On Hand Quantity', related='product_id.qty_available', depends=['product_id'])
+    product_virtual_available = fields.Float('Product Forecasted Quantity', related='product_id.virtual_available', depends=['product_id'])
     description_bom_line = fields.Char('Kit', compute='_compute_description_bom_line')
     manual_consumption = fields.Boolean(
         'Manual Consumption', compute='_compute_manual_consumption', store=True,