diff --git a/sale.py b/sale.py
index 780f545..677721c 100644
--- a/sale.py
+++ b/sale.py
@@ -1144,7 +1144,7 @@ class WizardSalePayment(Wizard):
         ]
         context = Transaction().context
         
-        if context.get('sale_device', None):
+        if context.get('sale_device', None) and sale.sale_device:
             dom_statement.append(('sale_device', '=', sale.sale_device.id))
 
         if result.get('view'):