diff --git a/README.md b/README.md
index da9b22d31..a58f29ec5 100644
--- a/README.md
+++ b/README.md
@@ -10,7 +10,10 @@ Reinventing ticket presales, one bit at a time.
 
 Project status
 --------------
-We are really working on it, but it will take a while. Currently, this is as unstable as it can be. Everything can change daily. Try it, hack on it, write pull requests, write documentation, translate it but don't use it and don't put data in it.
+The basic features are present and sufficiently stable. pretix has been in use for one event and
+sold a few hundred tickets so far. However, many features are missing and the admin UI is far from
+being complete, so we **do not recommend** production use yet.
+
 
 Maintainer
 ----------
diff --git a/src/pretix/control/forms/event.py b/src/pretix/control/forms/event.py
index bc3bbc65e..b70eee4b9 100644
--- a/src/pretix/control/forms/event.py
+++ b/src/pretix/control/forms/event.py
@@ -153,7 +153,8 @@ class EventSettingsForm(SettingsForm):
     mail_prefix = forms.CharField(
         label=_("Subject prefix"),
         help_text=_("This will be prepended to the subject of all outgoing emails. This could be a short form of "
-                    "your event name.")
+                    "your event name."),
+        required=False
     )
     mail_from = forms.EmailField(
         label=_("Sender address"),
diff --git a/src/pretix/plugins/banktransfer/views.py b/src/pretix/plugins/banktransfer/views.py
index 97165d324..3642ca29a 100644
--- a/src/pretix/plugins/banktransfer/views.py
+++ b/src/pretix/plugins/banktransfer/views.py
@@ -232,7 +232,3 @@ class ImportView(EventPermissionRequiredMixin, TemplateView):
                     row['class'] = 'warning'
                     row['message'] = _('Order has been refunded')
         return data
-
-    @method_decorator(sensitive_post_parameters)
-    def dispatch(self, *args, **kwargs):
-        return super().dispatch(*args, **kwargs)