diff --git a/sf_sale/models/sale_order.py b/sf_sale/models/sale_order.py
index b4aca0dc..51e7ca3c 100644
--- a/sf_sale/models/sale_order.py
+++ b/sf_sale/models/sale_order.py
@@ -313,6 +313,8 @@ class RePurchaseOrder(models.Model):
     @api.depends('origin')
     def _compute_purchase_type(self):
         for purchase in self:
+            if not purchase.origin:
+                continue
             origin = [origin.replace(' ', '') for origin in purchase.origin.split(',')]
             order_ids = self.env['sale.order'].sudo().search([('name', 'in', origin)])
             if order_ids: