diff --git a/account_check/models/account_check.py b/account_check/models/account_check.py
index 0bc40d613..7893d381f 100644
--- a/account_check/models/account_check.py
+++ b/account_check/models/account_check.py
@@ -616,7 +616,7 @@ def action_create_debit_note(
             name = 'Rechazo cheque "%s"' % (self.name)
         # si pedimos la de holding es una devolucion
         elif operation == 'returned':
-            name = 'Devolución cheque "%s"' % (self.name)
+            name = u'Devolución cheque "%s"' % (self.name)
         else:
             raise ValidationError(_(
                 'Debit note for operation %s not implemented!' % (