diff --git a/src/pretix/base/models/invoices.py b/src/pretix/base/models/invoices.py
index 22510eb1b3..8094bc0b51 100644
--- a/src/pretix/base/models/invoices.py
+++ b/src/pretix/base/models/invoices.py
@@ -192,6 +192,9 @@ class Invoice(models.Model):
         unique_together = ('organizer', 'prefix', 'invoice_no')
         ordering = ('date', 'invoice_no',)
 
+    def __repr__(self):
+        return '<Invoice {} / {}>'.format(self.full_invoice_no, self.pk)
+
 
 class InvoiceLine(models.Model):
     """