diff --git a/src/pretix/api/views/order.py b/src/pretix/api/views/order.py
index 8d179a8a9..0a09bbf31 100644
--- a/src/pretix/api/views/order.py
+++ b/src/pretix/api/views/order.py
@@ -392,6 +392,7 @@ class OrderPositionFilter(FilterSet):
             | Q(addon_to__attendee_name_cached__icontains=value)
             | Q(order__code__istartswith=value)
             | Q(order__invoice_address__name_cached__icontains=value)
+            | Q(order__email__icontains=value)
         )
 
     def has_checkin_qs(self, queryset, name, value):