diff --git a/addons/event_sale/models/sale_order.py b/addons/event_sale/models/sale_order.py
index 685571079c6..adb203fa805 100644
--- a/addons/event_sale/models/sale_order.py
+++ b/addons/event_sale/models/sale_order.py
@@ -29,9 +29,9 @@ class SaleOrder(models.Model):
                     ._for_xml_id('event_sale.action_sale_order_event_registration')
         return res
 
-    def action_cancel(self):
+    def _action_cancel(self):
         self.order_line._cancel_associated_registrations()
-        return super(SaleOrder, self).action_cancel()
+        return super()._action_cancel()
 
     def action_view_attendee_list(self):
         action = self.env["ir.actions.actions"]._for_xml_id("event.event_registration_action_tree")
diff --git a/addons/sale/models/sale_order.py b/addons/sale/models/sale_order.py
index fa0231f321f..d38652f2ca1 100644
--- a/addons/sale/models/sale_order.py
+++ b/addons/sale/models/sale_order.py
@@ -877,6 +877,9 @@ class SaleOrder(models.Model):
                 'context': {'default_order_id': self.id},
                 'target': 'new'
             }
+        return self._action_cancel()
+
+    def _action_cancel(self):
         inv = self.invoice_ids.filtered(lambda inv: inv.state == 'draft')
         inv.button_cancel()
         return self.write({'state': 'cancel'})
diff --git a/addons/sale_coupon/models/sale_order.py b/addons/sale_coupon/models/sale_order.py
index c2f54dcbd6c..cd52c05f8d2 100644
--- a/addons/sale_coupon/models/sale_order.py
+++ b/addons/sale_coupon/models/sale_order.py
@@ -49,8 +49,8 @@ class SaleOrder(models.Model):
         self._send_reward_coupon_mail()
         return super(SaleOrder, self).action_confirm()
 
-    def action_cancel(self):
-        res = super(SaleOrder, self).action_cancel()
+    def _action_cancel(self):
+        res = super()._action_cancel()
         self.generated_coupon_ids.write({'state': 'expired'})
         self.applied_coupon_ids.write({'state': 'new'})
         self.applied_coupon_ids.sales_order_id = False
diff --git a/addons/sale_stock/models/sale_order.py b/addons/sale_stock/models/sale_order.py
index 026c25d2053..ab7ecd497a3 100644
--- a/addons/sale_stock/models/sale_order.py
+++ b/addons/sale_stock/models/sale_order.py
@@ -174,10 +174,7 @@ class SaleOrder(models.Model):
     def action_view_delivery(self):
         return self._get_action_view_picking(self.picking_ids)
 
-    def action_cancel(self):
-        res = super(SaleOrder, self).action_cancel()
-        if(isinstance(res, dict)):
-            return res
+    def _action_cancel(self):
         documents = None
         for sale_order in self:
             if sale_order.state == 'sale' and sale_order.order_line:
@@ -192,7 +189,7 @@ class SaleOrder(models.Model):
                         continue
                 filtered_documents[(parent, responsible)] = rendering_context
             self._log_decrease_ordered_quantity(filtered_documents, cancel=True)
-        return res
+        return super()._action_cancel()
 
     def _get_action_view_picking(self, pickings):
         '''