diff --git a/sale_stock_usability/sale_stock.py b/sale_stock_usability/sale_stock.py
index fb80d43..fedecab 100644
--- a/sale_stock_usability/sale_stock.py
+++ b/sale_stock_usability/sale_stock.py
@@ -11,34 +11,40 @@ class SaleOrder(models.Model):
     warehouse_id = fields.Many2one(track_visibility='onchange')
     incoterm = fields.Many2one(track_visibility='onchange')
     picking_status = fields.Selection([
-        ('deliverd', 'Fully Deliverd'),
-        ('partialy_delivered', 'Partialy Delivered'),
+        ('delivered', 'Fully Delivered'),
+        ('partially_delivered', 'Partially Delivered'),
         ('to_deliver', 'To Deliver'),
+        ('cancel', 'Delivery Cancelled'),
         ('no', 'Nothing to Deliver')
-        ], string='Picking Status', compute='_get_delivered', store=True, readonly=True)
+        ], string='Picking Status', compute='_compute_picking_status',
+        store=True, readonly=True)
 
     @api.depends('state', 'picking_ids.state')
-    def _get_delivered(self):
+    def _compute_picking_status(self):
         """
         Compute the picking status for the SO. Possible statuses:
-        - no: if the SO is not in status 'sale' or 'done', we consider that there is nothing to
-          deliver. This is also the default value if the conditions of no other status is met.
-        - delivered: if all  pickings are done.
-        - Partialy Done : If at least one picking is done.
-        - To deliver : if all pickings are in confirmed, assigned or waiting state.
+        - no: if the SO is not in status 'sale' nor 'done', we consider that
+          there is nothing to deliver. This is also the default value if the
+          conditions of no other status is met.
+        - cancel: all pickings are cancelled
+        - delivered: if all  pickings are done or cancel.
+        - partially_delivered: If at least one picking is done.
+        - to_deliver: if all pickings are in confirmed, assigned, waiting or
+          cancel state.
         """
-
         for order in self:
-
-            if order.state not in ('sale', 'done') or not order.picking_ids:
-                picking_status = 'no'
-            elif all(picking.state == 'done' for picking in order.picking_ids):
-                picking_status = 'deliverd'
-            elif any(picking.state == 'done' for picking in order.picking_ids):
-                picking_status = 'partialy_delivered'
-            elif all(picking.state in ('confirmed', 'assigned', 'waiting') for picking in order.picking_ids):
-                picking_status = 'to_deliver'
-            else:
-                picking_status = 'no'
-
+            picking_status = 'no'
+            if order.state in ('sale', 'done') and order.picking_ids:
+                pstates = [
+                    picking.state for picking in order.picking_ids]
+                if all([state == 'cancel' for state in pstates]):
+                    picking_status = 'cancel'
+                elif all([state in ('done', 'cancel') for state in pstates]):
+                    picking_status = 'delivered'
+                elif any([state == 'done' for state in pstates]):
+                    picking_status = 'partially_delivered'
+                elif all([
+                        state in ('confirmed', 'assigned', 'waiting', 'cancel')
+                        for state in pstates]):
+                    picking_status = 'to_deliver'
             order.picking_status = picking_status