diff --git a/invoice.py b/invoice.py
index c5577cd5dc..aec9f31124 100644
--- a/invoice.py
+++ b/invoice.py
@@ -17,6 +17,7 @@ class Invoice:
     __name__ = 'account.invoice'
     agent = fields.Many2One('commission.agent', 'Commission Agent',
         domain=[
+            ('type_', '=', 'agent'),
             ('company', '=', Eval('company', -1)),
             ],
         states={
diff --git a/sale.py b/sale.py
index 162c464428..b3a5609308 100644
--- a/sale.py
+++ b/sale.py
@@ -15,6 +15,7 @@ class Sale:
     __name__ = 'sale.sale'
     agent = fields.Many2One('commission.agent', 'Commission Agent',
         domain=[
+            ('type_', '=', 'agent'),
             ('company', '=', Eval('company', -1)),
             ],
         states={