diff --git a/doc/development/api/general.rst b/doc/development/api/general.rst
index 1b23ffd240..15cda410c6 100644
--- a/doc/development/api/general.rst
+++ b/doc/development/api/general.rst
@@ -11,7 +11,7 @@ Core
 ----
 
 .. automodule:: pretix.base.signals
-   :members: periodic_task
+   :members: periodic_task, event_live_issues
 
 Order events
 """"""""""""
diff --git a/src/pretix/base/signals.py b/src/pretix/base/signals.py
index 715751fa09..10f12f6769 100644
--- a/src/pretix/base/signals.py
+++ b/src/pretix/base/signals.py
@@ -52,6 +52,18 @@ class EventPluginSignal(django.dispatch.Signal):
         return responses
 
 
+event_live_issues = EventPluginSignal(
+    providing_args=[]
+)
+"""
+This signal is sent out to determine whether an event can be taken live. If you want to
+prevent the event from going live, return a string that will be displayed to the user
+as the error message. If you don't, your receiver should return ``None``.
+
+As with all event-plugin signals, the ``sender`` keyword argument will contain the event.
+"""
+
+
 register_payment_providers = EventPluginSignal(
     providing_args=[]
 )
diff --git a/src/pretix/control/views/event.py b/src/pretix/control/views/event.py
index e9896abdb5..cf3967f303 100644
--- a/src/pretix/control/views/event.py
+++ b/src/pretix/control/views/event.py
@@ -24,7 +24,7 @@ from pretix.base.services import tickets
 from pretix.base.services.invoices import build_preview_invoice_pdf
 from pretix.base.services.mail import SendMailException, mail
 from pretix.base.signals import (
-    register_payment_providers, register_ticket_outputs,
+    event_live_issues, register_payment_providers, register_ticket_outputs,
 )
 from pretix.control.forms.event import (
     DisplaySettingsForm, EventSettingsForm, EventUpdateForm,
@@ -668,6 +668,11 @@ class EventLive(EventPermissionRequiredMixin, TemplateView):
         if not self.request.event.quotas.exists():
             issues.append(_('You need to configure at least one quota to sell anything.'))
 
+        responses = event_live_issues.send(self.request.event)
+        for receiver, response in responses:
+            if response:
+                issues.append(response)
+
         return issues
 
     def post(self, request, *args, **kwargs):