diff --git a/mrp_production_cost/__manifest__.py b/mrp_production_cost/__manifest__.py
index a04507c6..bd2c8b57 100644
--- a/mrp_production_cost/__manifest__.py
+++ b/mrp_production_cost/__manifest__.py
@@ -7,7 +7,12 @@
     "category": "Manufacturing/Manufacturing",
     "license": "AGPL-3",
     "version": "16.0.1.1.0",
-    "depends": ["product", "mrp", "stock", "stock_move_cost"],
+    "depends": [
+        "product",
+        "mrp",
+        "stock",
+        "stock_move_cost",
+    ],
     "data": [
         "views/mrp_production_views.xml",
         "views/mrp_stockmove_views.xml",
diff --git a/mrp_production_cost/models/mrp_production.py b/mrp_production_cost/models/mrp_production.py
index 0fcd0c11..c4d682db 100644
--- a/mrp_production_cost/models/mrp_production.py
+++ b/mrp_production_cost/models/mrp_production.py
@@ -105,6 +105,9 @@ def _compute_price_unit_cost(self):
                 production.cost_manufacturing_real / production.qty_producing
             )
 
+    def _post_inventory(self, cancel_backorder=False):
+        return super()._post_inventory(cancel_backorder=cancel_backorder)
+
     def write(self, vals):
         result = super().write(vals)
         if "state" in vals and vals.get("state", False) == "done":
diff --git a/mrp_production_cost/models/mrp_workorder.py b/mrp_production_cost/models/mrp_workorder.py
index 182738cb..7ea9c6a0 100644
--- a/mrp_production_cost/models/mrp_workorder.py
+++ b/mrp_production_cost/models/mrp_workorder.py
@@ -22,17 +22,11 @@ class MrpWorkorder(models.Model):
     @api.depends("duration_expected", "costs_hour")
     def _compute_workorder_cost_estimated(self):
         for order in self:
-            workorder_cost_estimated = 0
-            if order.duration_expected:
-                workorder_cost_estimated = order.costs_hour * (
-                    order.duration_expected / 60
-                )
-            order.workorder_cost_estimated = workorder_cost_estimated
+            order.workorder_cost_estimated = order.costs_hour * (
+                order.duration_expected / 60
+            )
 
     @api.depends("duration", "costs_hour")
     def _compute_workorder_cost_real(self):
         for order in self:
-            workorder_cost_real = 0
-            if order.duration:
-                workorder_cost_real = order.costs_hour * (order.duration / 60)
-            order.workorder_cost_real = workorder_cost_real
+            order.workorder_cost_real = order.costs_hour * (order.duration / 60)