Fix missing import

diff --git a/postgresqleu/confreg/views.py b/postgresqleu/confreg/views.py
index 2488c005ead336fba2f2ff4750438c408ab0299a..efe66032e3eb59ce0a2459afd50ff6a612e03afb 100644 (file)
--- a/postgresqleu/confreg/views.py
+++ b/postgresqleu/confreg/views.py
@@ -43,7 +43,7 @@ from postgresqleu.util.random import generate_random_token
 from postgresqleu.invoices.models import Invoice, InvoicePaymentMethod, InvoiceRow
 from postgresqleu.confwiki.models import Wikipage
 from postgresqleu.invoices.util import InvoiceManager, InvoicePresentationWrapper
-from postgresqleu.invoices.models import InvoiceProcessor
+from postgresqleu.invoices.models import InvoiceProcessor, InvoiceHistory
 from postgresqleu.mailqueue.util import send_mail, send_simple_mail, send_template_mail, template_to_string
 from postgresqleu.util.jsonutil import JsonSerializer