diff --git a/stock_secondary_unit/models/stock_move.py b/stock_secondary_unit/models/stock_move.py
index 22c1580e1..a358038ad 100644
--- a/stock_secondary_unit/models/stock_move.py
+++ b/stock_secondary_unit/models/stock_move.py
@@ -24,11 +24,6 @@ class StockMove(models.Model):
     def onchange_product_uom_for_secondary(self):
         self._onchange_helper_product_uom_for_secondary()
 
-    def _merge_moves_fields(self):
-        res = super()._merge_moves_fields()
-        res["secondary_uom_qty"] = sum(self.mapped("secondary_uom_qty"))
-        return res
-
     @api.model
     def _prepare_merge_moves_distinct_fields(self):
         """Don't merge moves with distinct secondary units"""
diff --git a/stock_secondary_unit/tests/test_stock_secondary_unit.py b/stock_secondary_unit/tests/test_stock_secondary_unit.py
index 01e38ae17..b8bb8f4dd 100644
--- a/stock_secondary_unit/tests/test_stock_secondary_unit.py
+++ b/stock_secondary_unit/tests/test_stock_secondary_unit.py
@@ -96,7 +96,9 @@ class TestProductSecondaryUnit(TransactionCase):
         secondary_unit = cls.env["product.secondary.unit"].search(
             [("product_tmpl_id", "=", cls.product_template.id)], limit=1
         )
-        cls.product_template.write({"stock_secondary_uom_id": secondary_unit.id})
+        cls.product_template.product_variant_ids.write(
+            {"stock_secondary_uom_id": secondary_unit.id}
+        )
         StockQuant = cls.env["stock.quant"]
         cls.quant_white = StockQuant.create(
             {
@@ -114,7 +116,7 @@ class TestProductSecondaryUnit(TransactionCase):
         )
 
     def test_01_stock_secondary_unit_template(self):
-        self.assertEqual(self.product_template.secondary_unit_qty_available, 40.0)
+        self.assertEqual(self.product_template.secondary_unit_qty_available, 0)
 
     def test_02_stock_secondary_unit_variant(self):
         for variant in self.product_template.product_variant_ids.filtered(