diff --git a/mixin.py b/mixin.py
index 84fce84..1e75916 100644
--- a/mixin.py
+++ b/mixin.py
@@ -32,7 +32,7 @@ class EdocumentMixin(object):
         else:
             result.extend([
                 y
-                for x in self.company.party.bank_accounts
+                for x in self.invoice.company.party.bank_accounts
                 for y in x.numbers])
         return result