diff --git a/djadmin2/types.py b/djadmin2/types.py
index 7aff365..0750ead 100644
--- a/djadmin2/types.py
+++ b/djadmin2/types.py
@@ -279,7 +279,7 @@ class ModelAdmin2(with_metaclass(ModelAdminBase2)):
         return self.ordering
 
 
-class Admin2Inline(extra_views.InlineFormSet):
+class Admin2Inline(extra_views.InlineFormSetFactory):
     """
     A simple extension of django-extra-view's InlineFormSet that
     adds some useful functionality.