diff --git a/src/pretix/plugins/checkinlists/exporters.py b/src/pretix/plugins/checkinlists/exporters.py
index 6ff2c0161b..db5c1ca0de 100644
--- a/src/pretix/plugins/checkinlists/exporters.py
+++ b/src/pretix/plugins/checkinlists/exporters.py
@@ -143,7 +143,7 @@ class CheckInListMixin(BaseExporter):
                 'resolved_name_part'
             )
 
-        if form_data['attention_only']:
+        if form_data.get('attention_only'):
             qs = qs.filter(Q(item__checkin_attention=True) | Q(order__checkin_attention=True))
 
         if not cl.include_pending: