diff --git a/sf_manufacturing/models/mrp_workcenter.py b/sf_manufacturing/models/mrp_workcenter.py
index 4a9af4c7..017f89b8 100644
--- a/sf_manufacturing/models/mrp_workcenter.py
+++ b/sf_manufacturing/models/mrp_workcenter.py
@@ -207,7 +207,8 @@ class ResWorkcenter(models.Model):
         date_planned_end = date_planned_end.strftime('%Y-%m-%d')
         plan_ids = self.env['sf.production.plan'].sudo().search([('date_planned_start', '>=', date_planned_start),
                                                                  ('date_planned_start', '<',
-                                                                  date_planned_end), ('state', '!=', 'draft')])
+                                                                  date_planned_end),
+                                                                 ('state', 'not in', ['draft', 'cancel'])])
         if plan_ids:
             sum_qty = sum([p.product_qty for p in plan_ids])
             if sum_qty >= self.default_capacity:
@@ -222,7 +223,8 @@ class ResWorkcenter(models.Model):
         date_planned_end = date_planned_end.strftime('%Y-%m-%d %H:00:00')
         plan_ids = self.env['sf.production.plan'].sudo().search([('date_planned_start', '>=', date_planned_start),
                                                                  ('date_planned_start', '<',
-                                                                  date_planned_end), ('state', '!=', 'draft')])
+                                                                  date_planned_end),
+                                                                 ('state', 'not in', ['draft', 'cancel'])])
 
         if plan_ids:
             sum_qty = sum([p.product_qty for p in plan_ids])