diff --git a/src/pretix/base/forms/questions.py b/src/pretix/base/forms/questions.py
index 0e26d6a7ca..9c326ae671 100644
--- a/src/pretix/base/forms/questions.py
+++ b/src/pretix/base/forms/questions.py
@@ -47,7 +47,9 @@ from django.conf import settings
 from django.contrib import messages
 from django.core.exceptions import ValidationError
 from django.core.files.uploadedfile import SimpleUploadedFile
-from django.core.validators import MaxValueValidator, MinValueValidator, RegexValidator
+from django.core.validators import (
+    MaxValueValidator, MinValueValidator, RegexValidator,
+)
 from django.db.models import QuerySet
 from django.forms import Select, widgets
 from django.utils import translation