diff --git a/src/pretix/control/views/item.py b/src/pretix/control/views/item.py
index 7732805acc..0b708310be 100644
--- a/src/pretix/control/views/item.py
+++ b/src/pretix/control/views/item.py
@@ -1323,6 +1323,8 @@ class ItemUpdateGeneral(ItemDetailMixin, EventPermissionRequiredMixin, MetaDataE
     def plugin_forms(self):
         forms = []
         for rec, resp in item_forms.send(sender=self.request.event, item=self.item, request=self.request):
+            if not resp:
+                continue
             if isinstance(resp, (list, tuple)):
                 forms.extend(resp)
             else: